So there is this idea that we see here in Genesis 3 where these ideas are already beginning to come out in the text, that when we sin, in the same way as with Adam, God in mercy does not strike us down immediately - He gives us more life, He gives us time. What does He want to see? Repentance. He wants us to see us changed to learn the lessons from the sins that we do. He postpones the penalty for us, just as He postponed the penalty for Adam, to give us time to repent. What this means is our turning back to God and our seeking His pardon allows Him to commute the sentence of eternal death through Christ's blood. That is how it works for us.
We know, just as Adam died after 930 years, all men must die. We must die. It says that very plainly in Hebrews 9:27 it is given to men once to die and after this the judgment. So we are all going to die, whether our sins are forgiven or not. That is just the way it is with human beings. The body wears out. God did not make us to be eternally physical. Physical people will die. But if we remain in Christ, then we have the promise of eternal life.
Let us go to John 11. This is the raising of Lazarus and something He says to Martha.