What is the biblical basis for all people meeting God when they die?
There are multiple passages that support this.
- Over and over again, Christ is pictured as our high priest, our advocate [defense attorney] and the one who intercedes for us to God the Father. Throughout scripture, in fact over 60 times in the Old and New Testament - God is named as the judge. Because God is totally pure and perfect, he cannot just overlook sin.
Psalm 75:7
But God is the Judge;
He puts down one and exalts another.
Psalm 50:6
And the heavens declare His righteousness,
For God Himself is judge. Selah.
2 Timothy 4:8
in the future there is laid up for me the crown of righteousness, which the Lord, the righteous Judge, will award to me on that day; and not only to me, but also to all who have loved His appearing.
Hebrews 12:23
to the general assembly and church of the firstborn who are enrolled in heaven, and to God, the Judge of all, and to the spirits of the righteous made perfect,
Source: https://bible.knowing-jesus.com/topics/God,-As-Judge
First we need to understand the concept of the great white throne judgement, which is also referred to as the Bema seat judgment. Bema seat was an elevated box for judges in the AncientOlympic games, and it also is a Hebrew word which means the elevated stand or podium in synagogues, from where the Torah is read. This phrase Bema seat is another term for the Great white throne Judgement.
Great White Throne Judgment
From Simple English Wikipedia
"In Christianity, the Great White Throne Judgment is the time when the dead people that did not live during the 1,000 years that Satan was inside the bottomless pit come back to life and are judged by God according to their works using the 66 books of the Bible."
Revelation 20:11-15
God the father is the Judge, and scripture says that for Christians - Christ is our "advocate"- our defense attorney - who intercedes for us to the Father.
In several languages, this Greek word advokat, is literally the same word used for defense attorney - Russian, Polish, Ukrainian and some other languages.
It is through the basis of Christ's substitionary atonement on the cross that we are justified - declared righteous by Christ.
God looks at us as justified - Just-as-if-I'd never sinned [declared righteous] through the blood of his son - who was the Perfect spotless Passover lamb.
Hebrews 9:26-28. This passage explicitly states that all mankind die once [refuting reincarnation] and that everyone will be judged.
…26 Otherwise, Christ would have had to suffer repeatedly since the foundation of the world. But now He has appeared once for all at the end of the ages to do away with sin by the sacrifice of Himself. 27 Just as man is appointed to die once, and after that to face judgment, 28 so also Christ was offered once to bear the sins of many; and He will appear a second time, not to bear sin, but to bring salvation to those who eagerly await Him.…
Now, keep in mind the point of Christ, who is our advocate - who speaks in our defense to God, the righteous judge.
We see parables of this great final judgment in multiple parables of God separating the wheat from the tares, and also God separating the sheep [true followers of Christ] from goats - the impostors. Those who claim they know Christ but their actions or fruit proves they really do not.
Tares, especially in the early stages of growth, resemble wheat. Likewise, a false believer may resemble a true believer. In Matthew 7:22, Jesus warned that many profess faith but do not know Him. Thus, each person should examine his own relationship with Christ (2 Corinthians 13:5). First John is an excellent test of salvation. Jesus Christ will one day establish true righteousness. After He raptures the true church out of this world, God will pour out His righteous wrath on the world. During that tribulation, He will draw others to saving faith in Jesus Christ. At the end of the tribulation, all unbelievers will be judged for their sin and unbelief; then, they will be removed from God’s presence. True followers of Christ will reign with Him. What a glorious hope for the “wheat”!
https://www.gotquestions.org/parable-wheat-tares.html