I posted this answer to this question on a duplicate question that will likely be closed I'm reproducing my answer here:
Jesus lived prior to the giving of the gospel of the grace of God and the formation of the new human (the body of the Christ) which would not arrive until Paul, the architect was commissioned by Christ in Acts 9ff. Jesus did not live in the current age but rather at the end of the previous age:
ESV Matthew 24:3 As he sat on the Mount of Olives, the disciples came
to him privately, saying, “Tell us, when will these things be, and
what will be the sign of your coming and of the end of the age?
ESV Hebrews 9:26 for then he would have had to suffer repeatedly since
the foundation of the world. But as it is, he has appeared once for
all at the end of the ages to put away sin by the sacrifice of
himself.
ESV Acts 2:
16 No, this is what was spoken by the prophet Joel: 17 “‘And in
the last days it shall be, God declares, that I will pour out my
Spirit on all flesh, and your sons and your daughters shall
prophesy, and your young men shall see visions, and your old men shall
dream dreams;
ESV Hebrews 1:2 but in these last days he has spoken to us by his
Son, whom he appointed the heir of all things, through whom also he
created the world.
ESV 1 Corinthians 10:11 Now these things happened to them as an
example, but they were written down for our instruction, on whom the
end of the ages has come.
ESV 1 Corinthians 3:10 According to the grace of God given to me, like
a skilled master builder I laid a foundation, and someone else is
building upon it. Let each one take care how he builds upon it.
ESV Ephesians 1:
7In him we have redemption through his blood, the forgiveness of our
trespasses, according to the riches of his grace, 8which he lavished
upon us, in all wisdom and insight 9making known to us the mystery
of his will, according to his purpose, which he set forth in Christ
10as a plan for the fullness of time, to unite all things in him,
things in heaven and things on earth.
ESV Galatians 4:4 But when the fullness of time had come, God sent
forth his Son, born of woman, born under the law,
ESV Matthew 10:23 When they persecute you in one town, flee to the
next, for truly, I say to you, you will not have gone through all
the towns of Israel before the Son of Man comes.
ESV Matthew 24:34 Truly, I say to you, this generation will not pass
away until all these things take place.
ESV Matthew 23:36 Truly I tell you, all these things will come upon
this generation.
ESV Luke 11:
29When the crowds were increasing, he began to say, “This
generation is an evil generation. It seeks for a sign, but no sign
will be given to it except the sign of Jonah. 30For as Jonah became a
sign to the people of Nineveh, so will the Son of Man be to this
generation. (resurrection)
To him would be committed the gospel and the 7 mysteries of the new dispensation:
https://biblehub.com/topical/d/dispensation.htm
In the meantime Jesus was "born under the law" and was not sent to upend the Torah, mikveh (aka "baptism") and conditional salvation:
ESV Galatians 4:4 But when the fullness of time had come, God sent
forth his Son, born of woman, born under the law
ESV Matthew 5:17 “Do not think that I have come to abolish the Law or
the Prophets; I have not come to abolish them but to fulfill them.
(Or possibly as the NLT has it):
NLT Matthew 5:17 "Don't misunderstand why I have come. I did not come
to abolish the law of Moses or the writings of the prophets. No, I
came to accomplish their purpose.
He is not concerned with personal justification by faith alone but rather with the arrival of the kingdom of God (glorified Israel), of which he spoke endlessly. Entrance into the kingdom of God was conditioned on repentance, obedience to Torah, mikveh (water "baptism") and so on:
ESV Matthew 7:
21“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom
of heaven, but the one who does the will of my Father who is in
heaven. 22On that day many will say to me, ‘Lord, Lord, did we not
prophesy in your name, and cast out demons in your name, and do many
mighty works in your name?’ 23And then will I declare to them, ‘I
never knew you; depart from me, you workers of lawlessness.’
It was essential to believe that Jesus was the Messiah but that was not enough. Just recognizing him as the Messiah (addressing him as KURIE, KURIE) was not sufficient apart from meeting the conditions of repentance, obedience to Torah, mikveh and the like. Faith without works (in the previous age) is dead.
I am currently researching the timing of the new covenant and the baptism of holy spirit and how it all works together, and have been for some time but it appears that the remnant were "born of the spirit" and had the law written on their hearts and were provided with everything that they needed to actually fulfill the righteous requirements to be prepared while the leaders were hardened (in order to bring in the gentiles (Romans 11:26)). But being born again and having holy spirit was not a guarantee. Endurance was:
ESV 1 John 5:
16If you see any brother or sister commit a sin that does not lead to
death, you should pray and God will give them life. I refer to those
whose sin does not lead to death. There is a sin that leads to
death. I am not saying that you should pray about that. 17All
wrongdoing is sin, and there is sin that does not lead to death. 18We
know that anyone born of God does not continue to sin; the One who
was born of God keeps them safe, and the evil one cannot harm them.
ESV 2 Peter 1:
3His divine power has granted to us all things that pertain to life
and godliness, through the knowledge of him who called us toc his
own glory and excellence,d 4by which he has granted to us his precious
and very great promises, so that through them you may become
partakers of the divine nature, having escaped from the corruption
that is in the world because of sinful desire. 5For this very
reason, make every effort to supplement your faith with virtue,e and
virtue with knowledge, 6and knowledge with self-control, and
self-control with steadfastness, and steadfastness with godliness,
7and godliness with brotherly affection, and brotherly affection with
love. 8For if these qualitiesf are yours and are increasing, they
keep you from being ineffective or unfruitful in the knowledge of our
Lord Jesus Christ. 9For whoever lacks these qualities is so
nearsighted that he is blind, having forgotten that he was cleansed
[in mikveh] from his former sins. 10Therefore, brothers, be all
the more diligent to confirm your calling and election, for if you
practice these qualities you will never fall. 11For in this way there
will be richly provided for you an entrance into the eternal kingdom
of our Lord and Savior Jesus Christ.
ESV Hebrews 10:
24And let us consider how to stir up one another to love and good
works, 25not neglecting to meet together, as is the habit of some, but
encouraging one another, and all the more as you see the Day drawing
near. 26For if we go on sinning deliberately after receiving the
knowledge of the truth, there no longer remains a sacrifice for sins,
27but a fearful expectation of judgment, and a fury of fire that will
consume the adversaries. 28Anyone who has set aside the law of Moses
dies without mercy on the evidence of two or three witnesses. 29How
much worse punishment, do you think, will be deserved by the one who
has trampled underfoot the Son of God, and has profaned the blood of
the covenant by which he was sanctified, and has outraged the Spirit of grace? 30For we know him who said, “Vengeance is mine; I
will repay.” And again, “The Lord will judge his people.” 31It is a
fearful thing to fall into the hands of the living God.
This is not Paul's gospel ("the gospel of the grace of God") but rather the gospel of the last days of the Jewish covenant(s).
In Paul's gospel justification is a gift, apart from any kind of personal accomplishment.
ESV Eph 2:
4But God, being rich in mercy, because of the great love with which he
loved us, 5even when we were dead in our trespasses, made us alive
together with Christ—by grace you have been saved— 6and raised us up
with him and seated us with him in the heavenly places in Christ
Jesus, 7so that in the coming ages he might show the immeasurable
riches of his grace in kindness toward us in Christ Jesus. 8For by
grace you have been saved through faith. And this is not your own
doing; it is the gift of God, 9not a result of works, so that no one
may boast.
In Paul's gospel there is no dependence on the Torah and its religious activities or any other effort. A gift does not involve effort.
Rather than being judged at some future date, the believer is immediately transferred into the kingdom of God's dear son:
ESV Eph 1:
11In him we have obtained an inheritance, having been predestined
according to the purpose of him who works all things according to the
counsel of his will, 12so that we who were the first to hope in Christ
might be to the praise of his glory. 13In him you also, when you heard
the word of truth, the gospel of your salvation, and believed in him,
were sealed with the promised Holy Spirit, 14who is the guarantee of our inheritance until we acquire possession of it, to the praise of
his glory.
ESV Colossians 1:
12giving thanks to the Father, who has qualified you to share in
the inheritance of the saints in light. 13He has delivered us from the domain of darkness and transferred us to the kingdom of his
beloved Son, 14in whom we have redemption, the forgiveness of sins.
So in order to correctly apply the scriptures to the current age one must not build one's hope on the conditional promises to be found righteous and enter the kingdom of God in the last day but rather on the operation of God through faith alone. In this age it is God that justifies based on the propitiation God provided in Christ's blood:
ESV Romans 5:19 For as by the one man’s disobedience the many were
made sinners, so by the one man’s obedience the many will be made
righteous.
