Sin came into the world because of what one man did. And with sin came death. So this is why all people must die—because all people have sinned. Sin was in the world before the Law of Moses. But God does not consider people guilty of sin if there is no law.
But from the time of Adam to the time of Moses, everyone had to die. Adam died because he sinned by not obeying God’s command. But even those who did not sin that same way had to die. That one man, Adam, can be compared to Christ, the one who was coming in the future.
But God’s free gift is not like Adam’s sin. Many people died because of the sin of that one man. But the grace that people received from God was much greater. Many received God’s gift of life by the grace of this other man, Jesus Christ. (Romans 5:12-15 ERV)
Sin is often misunderstood. It's not about bad behavior, but a rebellious will. We were all born with it. The insistence of the first humans to choose what was forbidden was passed down from generation to generation since the beginning.
And yet, God had a plan from the beginning. It was a fail-safe plan. God sent Himself as a human to reverse the curse of death—the consequence of sin. This is who Jesus is—the Son of God. He was God in a human body.
The effect of sin was set in motion by one person who chose their selfish will over trust in God. Yet, one person without sin—Jesus—set in motion a reversal of what the first human did, by giving His life for all humanity.
This reversal becomes a gift extended to all humanity, it's called grace. This gift can only be accepted by trusting God, what the first human chose not to do. It sets things back in right order with God, as God planned. ©Word-Strong_2015