The bible is a progressive revelation.
It basically starts with Creation, and ends at the end of the Revelation.
A lot happens in between, and all of it is this...>God is dealing with man, and this changes and changes.
God never changes, yet His dealing with man, is shown as changing all through the bible.
= Progressive revelaiton.
Right now, you and me and all of us, are in the "time of the Gentiles".
Paul is our literal apostle, as Paul is the "apostle TO the Gentiles".
This is God's dealing not just with the JEW.........but mostly with the GENTILES.
When the Grt Trib starts, God is again back with the Jew and the time of the Gentiles is OVER.
Jesus is coming back, 2nd time, not to save, but to destroy and bring vengeance. 2nd Thessalonians 1:8-9
He is literally coming back to bring vengeance on those who do not believe or obey the Gospel.
That's the next progressive reveal, and we are HERE.........before that, in the "time of the Gentiles".
During this Time of the Gentiles, you have some rules that apply, in this time of the Gentiles.
These rules DEFINE, the new covenant and the church doctrine.
When Jesus was here, he was in the OLD Covenant time, and when His Cross was raised the time of the Gentiles, and the NEW Covenant, literally began.
So, here is the first key you have to SEE, so that you dont get lost in the bible, as it has many working parts, and not all of them work correctly, when you try to JAM THEM INTO THE TIME OF THE GENTILES.
First Key........1.) Every verse that is written in the NT, that happened before the Cross was raised, has to be viewed in light of the Cross.
For example.......You have John' the Baptist's water baptism. This happened before the Cross was raised.
So, are you supposed to be baptized according to John's baptism that was for JEWS, (Jews like JESUS).....2000 yrs after the New Covenant is given?
Nope.
So, see that change?
And so, lots of changes occurred because the new Covenant replaced the Old covenant.
Now, your question.....""""""is everyone saved, just because they are born."
Not at all.............no.
And yet all who will become born again, ......God knew they would, before they were born.
He know i would be saved before i was born, but He didnt make me. He didnt force me.
He OFFERED Jesus to me, and said......"will you believe"..........and i DID, and God said...."your faith is counted as My Righteousness"., and i was born again.
And, He knew i would believe, before i was born......but that is not causing it to happen, that is FOREKNOWLEDGE.....that is : "God knows everything before it happens".......including who will end up in heaven and who will end up in hell.
BUT HERE IS THE KEY...... =.Knowing a thing, is not the same as causing it to happen.
Foreknowledge, is KNOWING.........not causing.
God's foreknowledge shows Him who will be saved, but that is God knowing they will before they are born.... that is not God causing it to happen.
Foreknowledge is KNOWING before it happens........... this is not the same as causing it to happen..
(foreknowledge)..= KNOWING it will, is not the same as causing it to happen.