One thing I can add for thought.
If the choice of salvation is ours. If it is we that do the choosing, then we also have the power to unchoose. There is NO security of salvation then.
If God does the choosing, it is a lock. Gods word is golden. Can anyone find instances of God choosing some and not others in the Bible?
Well that begs further thought, will cause a headache and the words, “but that is not fair”............