The wage of sin is death, that’s why Christ died for you to be justified. That’s the point. If Adam had a replacement he’d still be on Eden.
See, Adam’s sin was passed on despite his children’s oblivion to his sin. Under Adam a man’s righteousness was a filthy rag to God, but Under grace we are the righteousness of God. To prove not that we can sin as we wish, but show that God can ignore any sin as long as a death occurs for it (the wage of sin is death).
Think about it… All have sinned and fallen short of God’s glory, but God so loved the world that he gave his son that whosoever believes in him will not die.
We fall short everyday, we lie, we commit adultery, we even criticize but God wants you to be with him so he gave you an automatic eternal atonement. When you believe you are seated in heavenly places in Christ you will see that only your unbelief can push you you out of God’s redemption.
2 Corinthians 5
A part of the Bible says if we sin we know that we have a high priest interceding for us, not even if we sin we know God will forgive us. If he has to forgive us again then we need another Jesus.
This is faith, and faith comes by the word. So instead of believing me… I challenge you to read the entire new testament, but take careful note of anywhere you see ‘Holy Spirit’ and ‘life’.