9

The Athanasian Creed states:

Whosoever will be saved, before all things it is necessary that he hold the catholic faith. Which faith except every one do keep whole and undefiled; without doubt he shall perish everlastingly. And the catholic faith is this: That we worship one God in Trinity, and Trinity in Unity; Neither confounding the Persons; nor dividing the Essence. . . . He therefore that will be saved, let him thus think of the Trinity.

Furthermore, it is necessary to everlasting salvation; that he also believe faithfully the Incarnation of our Lord Jesus Christ. . . . This is the catholic faith; which except a man believe truly and firmly, he cannot be saved.

I think the biblical basis is easy to establish for the idea that believing the incarnation is necessary for salvation, but what is the biblical basis for the idea that believing in the Trinity is necessary for salvation?

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    @Flimzy: Just because a specific word isn't mentioned in the Bible does not mean what that word defines isn't. Trinity = Father is God, the Son is God, the Holy Spirit is God, and each is a distinct person (the Father is not the Son, the Son is not the Holy Spirit, and the Holy Spirit is not the Father). Is all that to the right of the equal sign mentioned in the Bible? If so, then the Trinity is mentioned in the Bible (implicitly). – user900 Jun 2 '16 at 7:23
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    @SimplyaChristian: Thanks for the theology lesson, but I'm perfectly aware of what the Trinity is. I'm also perfectly aware that the idea wasn't even conceived until centuries after the scriptures were written, and even then, it was only accepted by the church under the threat of violence. That doesn't mean it's a bad idea, or wrong... but to say that the idea is clearly portrayed in scripture, or even defined (as you suggest), is absolute bunk. – Flimzy Jun 2 '16 at 8:27
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    Even if some of us think there is no biblical basis for a particular belief, biblical basis questions are on-topic here. I've edited to make it crystal clear that this is a biblical basis question. – Lee Woofenden Jun 2 '16 at 10:25
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    I think this question is perfectly fine: there are Christians who believe this, so there's going to be some amount of biblical basis for it (probably in conjunction with other reasons). And if the OP is only interested in the biblical side of things, then so be it – the answers may not be satisfying, but it shouldn't be that tough to quote proponents on this issue. – Nathaniel Jun 2 '16 at 10:48
5

Jesus himself equates salvation with knowing God:

Now this is eternal life: that they know you, the only true God, and Jesus Christ, whom you have sent. - John 17:3 NIV

Elsewhere, the scriptures negate the idea that this could be a mere intellectual knowledge about God:

You believe that there is one God. Good! Even the demons believe that—and shudder. - James 2:19 NIV (cf. in context)

Instead, examining the preceding context (cf. John 14, 15 & 16) we must understand this knowing of God in terms of a relationship that includes intimate familiarity with His nature, which is revealed in the persons of Father, Son and Holy Spirit and consequently includes "believing in the Trinity":

7 If you really know me, you will know my Father as well. From now on, you do know him and have seen him.”

8 Philip said, “Lord, show us the Father and that will be enough for us.”

9 Jesus answered: “Don’t you know me, Philip, even after I have been among you such a long time? Anyone who has seen me has seen the Father. How can you say, ‘Show us the Father’? - John 14:7-9 NIV

15 “If you love me, keep my commands. 16 And I will ask the Father, and he will give you another advocate to help you and be with you forever— 17 the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him. But you know him, for he lives with you and will be in you. 18 I will not leave you as orphans; I will come to you. 19 Before long, the world will not see me anymore, but you will see me. Because I live, you also will live. 20 On that day you will realize that I am in my Father, and you are in me, and I am in you. - John 14:15-20 NIV

I no longer call you servants, because a servant does not know his master’s business. Instead, I have called you friends, for everything that I learned from my Father I have made known to you. John 15:15 NIV

When the Advocate comes, whom I will send to you from the Father—the Spirit of truth who goes out from the Father—he will testify about me. - John 15:26 NIV

13 But when he, the Spirit of truth, comes, he will guide you into all the truth. He will not speak on his own; he will speak only what he hears, and he will tell you what is yet to come. 14 He will glorify me because it is from me that he will receive what he will make known to you. 15 All that belongs to the Father is mine. That is why I said the Spirit will receive from me what he will make known to you. - John 16:13-15 NIV

29 Then Jesus’ disciples said, “Now you are speaking clearly and without figures of speech. 30 Now we can see that you know all things and that you do not even need to have anyone ask you questions. This makes us believe that you came from God.” - John 16:29-30 NIV

In summary, in much of his extended discourse following the last supper, Jesus teaches his disciples regarding the persons of the Trinity with the expressed intent that they may know God; and in the midst of his "High-priestly prayer" in chapter 17, he equates knowing this God (ie the Trinity) with eternal life.

  • There are so many ways that verse can be interpreted differently than you suggest (I'm not saying any of them are correct): What does "knowing" mean? Does this verse say knowing God is a prerequisite for eternal life (not strictly speaking), or a consequence of eternal life (grammatically, it's the latter), or is it making some other point? – Flimzy Jun 2 '16 at 6:08
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    TLDR; While I see how you come to your conclusion, it's nothing like an air-tight case. (But then, there won't ever be an air-tight answer to this question) – Flimzy Jun 2 '16 at 6:09
  • @Flimzy I've fleshed my answer out a little more. I think you're on the wrong track with talk of prerequisites and consequences - Jesus is equating the two: it's neither (if A then B), nor (if B then A), it's an (A = B) situation, or if you prefer: (A iff B). – bruised reed Jun 2 '16 at 20:21
  • I don't agree with your answer or think it's a good one. In fact, I think it is in error, especially about Jesus supposedly teaching his disciples about the Trinity. I see no biblical evidence of that whatsoever. But at least now it is an answer. – Lee Woofenden Jun 2 '16 at 20:30
  • @bruisedreed: You are correct. Eternal life = knowing the only true God and His Son, Jesus Christ. It is A=B. See this post. – user900 Jun 2 '16 at 23:01
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Acts 16:31 states

They replied, “Believe in the Lord Jesus and you will be saved, you and your household.”

And Acts 10:43 says,

About him [Jesus] all the prophets testify, that everyone who believes in him receives forgiveness of sins through his name.

Similarly, John 3:16 says

For this is the way God loved the world: He gave his one and only Son, so that everyone who believes in him will not perish but have eternal life.

And John 3:36 states,

The one who believes in the Son has eternal life. The one who rejects the Son will not see life, but God’s wrath remains on him.

Likewise, Mark 16:15-16 states,

He said to them, “Go into all the world and preach the gospel to every creature. The one who believes and is baptized will be saved, but the one who does not believe will be condemned.

Because of these verses, belief in Jesus Christ is widely regarded as a requirement for salvation, and the biblical basis arises from the interpretation of what, exactly it means to "believe" in Christ. This statement in Acts 16:31 and similar statements throughout the Bible make what you believe about who Christ said he was extremely important. In Knowledge of the Holy, A.W. Tozer frames it this way, (pg 5)

Among the sins to which the human heart is prone, hardly any other is more hateful to God than idolatry, for idolatry is at bottom a libel on His character. The idolatrous heart assumes that God is other than He is - in itself a monstrous sin - and substitutes for the true God one made after its own likeness. Always this God will conform to the image of the one who created it...

Not all who called themselves Christians through the centuries were Trinitarians, but as the presence of God in the fiery pillar glowed above the camp of Israel throughout the wilderness journey, saying to all the world, “These are My people,” so belief in the Trinity has since the days of the apostles shone above the Church of the Firstborn as she journeyed down the years. Purity and power have followed this faith. Under this banner have gone forth apostles, fathers, martyrs, mystics, hymnists, reformers, revivalists, and the seal of divine approval has rested on their lives and their labors. However they may have differed on minor matters, the doctrine of the Trinity bound them together.

This, however, is the real Christian faith, that we honor one single God in three Persons and three Persons in one single Godhead..

this tenet of the ancient creed has been held by the Eastern and Western branches of the Church and by all but a tiny minority of Christians.

And for this reason, belief in the Trinity is not just important, but is required for salvation. If Jesus really claimed to be God, then If one does not believe that Jesus was a member of the trinity, a part of the triune Godhead, then one does not actually believe in Jesus or his claims. Instead they believe in an idol of their own making, for it is clear in scripture and it has been clear throughout history to so many theologians that Jesus claimed to be God. As St. Thomas Aquinas said in Nature and Grace,

Explicit belief in the Trinity has therefore been necessary for salvation from the very beginning. ...it is impossible to believe explicitly in the mystery of the incarnation of Christ without faith in the Trinity. For the mystery of the incarnation of Christ includes that the Son of God took flesh, that he made the world new through the grace of the Holy Spirit, and that he was conceived by the Holy Ghost.

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    Aside from being factually incorrect about belief in the Trinity of Persons existing since apostolic times (there is no evidence whatsoever for such a claim), this does not provide the biblical basis for the idea that believing in the Trinity is necessary for salvation; rather, it provides human argumentation to that effect. – Lee Woofenden Jun 2 '16 at 22:02
  • All Biblically based claims are filtered through the lens of human interpretation and those interpretations will often differ. Or, as one of the the answer on my link to the question about the Hermeneutic Circle phrases it "Your perspective directly affects your reading of a text." - While your perspective might differ from others, or you may dispute whether belief is required for Salvation, or with this definition of belief, this is still one place from which the idea comes, therefore making it the biblical basis, regardless of the correctness of the doctrine or interpretation. – James Shewey Jun 3 '16 at 5:10
  • I understand. But my objection is much simpler. The answer quotes a single Bible passage, then makes a general reference to "similar statements throughout the Bible." The rest of the answer consists mostly of quotes from Christian writers on the subject, which also don't provide a biblical basis for the views put forward. That does not constitute a well-referenced biblical basis answer. Biblical basis answers should focus on what the Bible itself does and doesn't say on the subject. This simply isn't a good biblical basis answer, because it makes very little reference to the Bible. – Lee Woofenden Jun 3 '16 at 15:57
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    Tozer is surely referring to the first and second commandments in the first paragraph of the long quote, so those verses are at least implicitly part of his "biblical basis" for this view. – Nathaniel Jun 5 '16 at 13:29
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  1. You must believe that God took on human form in the person of Jesus.

    1 John 4:2-3

    2 This is how you can recognize the Spirit of God: Every spirit that acknowledges that Jesus Christ has come in the flesh is from God, 3 but every spirit that does not acknowledge Jesus is not from God. This is the spirit of the antichrist, which you have heard is coming and even now is already in the world.

  2. You must acknowledge that Jesus is the Son of God, hence there is a father that is God.

    1 John 4:13-15

    13 This is how we know that we live in him and he in us: He has given us of his Spirit. 14 And we have seen and testify that the Father has sent his Son to be the Savior of the world. 15 If anyone acknowledges that Jesus is the Son of God, God lives in them and they in God.

    (Also, recall the Lord's Prayer, "Our father, who art in heaven...". It is instructive that Jesus taught his disciples to pray to the Father, and that this prayer, above all others, has been a permanent and prominent fixture among all Christians since the beginning of our faith.)

  3. You must receive the Holy Spirit, the urgency of which was recognized by the Apostles.

    Acts 19:

    1 While Apollos was at Corinth, Paul took the road through the interior and arrived at Ephesus. There he found some disciples 2 and asked them, “Did you receive the Holy Spirit whena you believed?”

    They answered, “No, we have not even heard that there is a Holy Spirit.”

    3 So Paul asked, “Then what baptism did you receive?”

    “John’s baptism,” they replied.

    4 Paul said, “John’s baptism was a baptism of repentance. He told the people to believe in the one coming after him, that is, in Jesus.” 5 On hearing this, they were baptized in the name of the Lord Jesus. 6 When Paul placed his hands on them, the Holy Spirit came on them, and they spoke in tongues and prophesied.

  4. Proof that you know the Son is that you know the Father, hence can distinguish between Father and Son and know both of them.

    John 14:

    6 Jesus answered, “I am the way and the truth and the life. No one comes to the Father except through me. 7 If you really know me, you will know my Father as well. From now on, you do know him and have seen him.”

    There are many statements in the Bible from which one can infer the Trinity, but the above statements are among the more imperative declarations.

Addendum:

To address an important omission, I add Jesus' statements that both demonstrate that the Father is God (He is greater than all), the Son is God (Jesus claims to grant eternal life), and that the two are one ("I and the Father are one)". This passage further declares that the people he is addressing do not believe this, hence are not part of his flock - they aren't saved.

John 10:25-30

25 Jesus answered, “I did tell you, but you do not believe. The works I do in my Father’s name testify about me, 26 but you do not believe because you are not my sheep. 27 My sheep listen to my voice; I know them, and they follow me. 28 I give them eternal life, and they shall never perish; no one will snatch them out of my hand. 29 My Father, who has given them to me, is greater than all[; no one can snatch them out of my Father’s hand. 30 I and the Father are one.”

  • Even if each of your conclusions are taken as true at face value, they don't add up to a requirement in believing in the trinity for salvation. They don't even spell out the trinity. – Flimzy Jun 5 '16 at 16:54
  • I held back one scripture, related to the "unforgivable sin" meaning blaspheming the Holy Spirit, because the nature of the unforgivable sin is still hotly debated among Christians. But to be honest, I do not believe it necessary to believe in the trinity "for" salvation, but I do believe it is necessary to believe in the trinity "from" salvation. The saved person knows the Father and knows the Son and is indwelt by the Holy Spirit hence necessarily has their eyes open to the trinity. – Paul Chernoch Jun 6 '16 at 12:48
  • @Flimzy - I have been selective in the scriptures I quoted. There are Bible verses that reveal facets of the trinity, and other verses that touch on the urgent necessity of belief in one or more of those facets. Some of these verses appear together, while others are separate. The poster asked for the imperative scripture verses - the things you must believe. Not all facets of what the trinity is like appear in the imperative verses, but enough do to demonstrate that such belief is required, just not nail down all the details: Father + Son + Holy Spirit + unity + distinctness + divinity. – Paul Chernoch Jun 6 '16 at 13:15
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TLDR; It's easy to prove the answer is "The case cannot be made directly from scripture."

Now, it's discouraged here to answer a question other than the one asked, but I'm going to do a bit of that here to demonstrate why the answer must be "No."

  1. If such a basis exists, it's not found directly in scripture

    Even the most superficial research will show that the word Trinity is not found in scripture. And while the concept of Trinity is arguably in scripture, it's not plainly so. It took the church until the late 4th century to reach anything resembling an agreement on the doctrine in its present form.

    As such, even the strongest Trinitarians don't cite direct scriptural evidence that the Trinity even exists. It took literally centuries to reason out the doctrine from the clues found in scripture.

    Therefore, any doctrines building upon the Trinity must also come from this line of reasoning, using scriptural concepts to build upon them logically. This means that any basis for the idea that believing in the Trinity is necessary for salvation cannot come directly from scripture, since the idea of the Trinity itself does not come directly from scripture.

  2. One cannot write about that which one does not understand

    Since the concept of the Trinity was formed centuries after the books of the Bible were authored, it thus follows that the Biblical authors didn't have the concept of the Trinity in mind when writing their texts. Perhaps they knew there was an interesting, complex relationship between the Son and Father, between the Son and Holy Spirit, etc., but the concept of the Trinity had not yet been formulated, and therefore could not be written about.

    If the authors of the Bible did not know of the Trinity, how could they write about it being a requirement for salvation? If they can't write about this requirement, it cannot be found in the pages of the Bible.

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    As much as I agree with your "answer," it doesn't actually answer the question, which asks for the biblical basis for belief in the Trinity being necessary for salvation. Your answer should be posted in response to a new counter-question of the biblical basis against the idea that believing in the Trinity is necessary for salvation. That question should be linked to this one. – Lee Woofenden Jun 3 '16 at 16:09
  • Oh, and it would also improve the answer if you provided references to some of the Bible passages you allude to, and biblical examples of the various phenomena that you say are present in the Bible. – Lee Woofenden Jun 3 '16 at 16:13
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    I disagree with your answer, and I even agree with you that your answer doesn't directly address the question, but I respect your answer and think it deserves a place at the table here. IMO, votes should be based on whether an answer is well-written and well-argued, not whether you personally agree with it or not. – Joey Day Jun 3 '16 at 16:34
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    @Flimzy The question doesn't ask whether there's a biblical basis for the belief stated, but what the biblical basis is. So an answer of "no" simply isn't an answer to the question. It's an answer to the contrasting question of the biblical basis against the position stated. – Lee Woofenden Jun 3 '16 at 22:59

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