A: So once you have believed, can you lose that salvation? The Bible says that whoever believes in Jesus becomes a Son of God. (John 1:12, Galatians 3:26) Jesus said believing in him was the way to be "born again." (John 3:3) Is birth reversible? Once you have become a son, can you ever become not a son? Even if your Father disowns you, you will always be his biological son, that is a historical fact which cannot be undone. We who believe are the spiritual sons of God, and he will not disown us in any case. No one can snatch the believer out of his hand. (John 10:29)