For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
First John 2:2 For He is the propitiation for our sins, and not for ours only, but for the sins of the whole world.
Romans 6:23 For the wages of sin is death, but the GIFT of God is eternal life, through Jesus Christ our Lord.
Since the GIFT of God is eternal life, and you accept the free gift, what do you have? If you could lose it or give it back it would not be eternal. John 3:18. John 6:47.
Ephesians 1:13-14 Our guarantee of eternal life. Romans 1:16.
Romans 8:29 For them He did foreknow, he also did predestinate to become the children of God.
God foreknew before the foundation of the world who would believe on Him to receive the free gift of eternal life and who would not.
John 12:32. Jesus said, I, if I be lifted up I will draw all men unto me. John 3:18. Gods word. John 6:47. John 6:40.
Those who have believed are chosen. Not chosen to believe.