What about the Gentiles in the Old Testament?
I have already answered this question clearly in post (No6) on this thread. Maybe you should read it again.
People will tell you different Juk, but from Adam and Eve onwards, every last person on this planet who opens their heart to the creator always becomes born again, ie. he is impregnated by the Spirit of God.
That is simply how it works from scripture, and also logically how it must have worked from the very beginning of mankind.
Every last one, if they had eternal hope must have had the New Birth from the Spirit of God, otherwise they were spiritually dead people who would have no inheritance in the Lord.
Paul confirms this-
1Corinthians15v50I declare to you, brothers and sisters, that flesh and blood cannot inherit the kingdom of God, nor does the perishable inherit the imperishable.
Paul is telling us the facts of life for all time, not some new theology for Christians. It should be obvious to all that flesh and blood belong only in the physical realm whereas the reborn spirit of man inhabits the spiritual realm of Heaven.
There can be no argument that if the patriarchs and saints described in the OT (including those prior to Abraham's family) did
not have the new birth of God in their human spirit, then they would remain spiritually dead, and would have absolutely no inheritance in the kingdom of heaven!
That includes all those from Adam to Noah, all those from Noah to Abraham, who were neither Jew, Israelite, nor gentile as those divisions didn't exist back then. It includes all those who were not descendants of Abraham. It includes Abel, it includes Enoch, it includes Rahab the Harlot, the only survivor of Jericho. It includes Jethro, Moses father in law, the priest of Midian.
Every last one born again of the Spirit of God and saved by faith just as Abraham was.
Now look at John chapter 3.
Bible teachers insist that in John 3 Jesus was initiating a brand new theology that would somehow only apply to Christians, but there is absolutely no justification in Jesus's words for such a notion. Jesus was simply explaining an eternal truth which had always been so.
1Now there was a Pharisee, a man named Nicodemus who was a member of the Jewish ruling council.2He came to Jesus at night and said, “Rabbi, we know that you are a teacher who has come from God. For no one could perform the signs you are doing if God were not with him.”
3Jesus replied, “Very truly I tell you, no one can see the kingdom of God unless they are born again. ”
Teachers point out that this is the very first mention of anyone being "born again", but such an idea was already widely known and taught.
The Tribe of Israel was already God's chosen people and en route to heaven, so Pharisees taught that any
non Jews wanting eternal life as part of the process of
new birth into the Jewish inheritance of God must be ritually immersed (baptised) in water. Now Jesus is seriously rocking Nicodemus's theological boat!
4“How can someone be born when they are old?” Nicodemus asked. “Surely they cannot enter a second time into their mother’s womb to be born!”
Nicodemus is not expressing ignorance here, merely demanding an explanation to resolve the discrepancy between his inherited theology and what Jesus has just told him.
5Jesus answered, “Very truly I tell you, no one can enter the kingdom of God unless they are born of water and the Spirit.
This is an extremely serious problem for someone who already considers himself one of the chosen because of his physical birth as a Jew.
6Flesh gives birth to flesh, but the Spirit gives birth to spirit. 7You should not be surprised at my saying, ‘You must be born again.’ 8The wind blows wherever it pleases. You hear its sound, but you cannot tell where it comes from or where it is going. So it is with everyone born of the Spirit.”
Again, the theology of new birth was not a new theology. Unless all OT believers and all NT believers are born again, they remain spiritually dead.
New life always came and still comes when a heart was surrendered to its creator.
Until that new life of the spirit happens first, the theology of the cross will always be complete foolishness.
1Cor1v18For the message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God.
There we have it confirmed by Paul. To understand the cross, you first need to be born again!