That there is a group of people who will never understand and believe every word of God, and there is a groups of people who will seek to enter in, and shall not be able ( Luke 13:24 ).
I agree with what you just said but you seem to think that people can hear and believe the gospel message but can not then latter reject that message for various reasons and yet scripture says just that.
If it were not possible for people to fall away, to apostatize then why do we see warning in scripture about it? Heb_6:4-6, 2Pe_2:20, 2Th_2:3, 2Pe_1:10, 1Ti_4:1-4, 2Ti_4:3-4.
Are you going to use the line "well they never really believed".
Why all the drama that you see in the Scriptures?
I don't see any "drama".
If, as you postulate, all those that are saved were already picked out before creation then what we see in scripture is just drama. It has no real meaning, it is just a show. But it is not a show is it. It is real and thus we can know that your view is wrong as we are told that we must believe in the risen Christ if we are to be saved
Where you apparently see "chance" in God's salvation of people, I see a specific set of deeds for a specific set of purposes and for a specific group of people.
For example, I see that He came to suffer and die for His people ( Isaiah 53:8 ).
He made all the difference for them.
But you do seem to ignore other scripture that shows the error of your view.
Heb_2:9 should taste death
for every man
1Jn_2:2 He Himself is
the propitiation for our sins; ....
also for those of the whole world.
1Ti_2:5-6 gave Himself
a ransom for all
Rom_5:6 at the right time Christ
died for the ungodly
Rom_5:8
while we were yet sinners, Christ died for us
It is not chance but it is by choice that one is saved. God desires all to be saved
1Ti 2:3 This is good and acceptable in the sight of God our Savior,
1Ti 2:4
who desires all men to be saved and to come to the knowledge of the truth.
And that is why He sent His son
Joh 3:17 "For God
did not send the Son into the world to judge the world,
but that the world might be saved through Him.
Those that hear and believe the gospel message will by the grace of God be saved.
Eph 1:13 In Him, you also,
after listening to the message of truth, the gospel of your salvation—
having also believed, you were
sealed in Him with the Holy Spirit of promise,
Rom 10:9 that
if you confess with your mouth Jesus as Lord,
and believe in your heart that God raised Him from the dead,
you will be saved;
Rom 10:13 for "
WHOEVER WILL CALL ON THE NAME OF THE LORD WILL BE SAVED."
Now to fully understand what God is telling us you should study these verses in the context in which they are found.