The way that sin applied to humanity was not always the same. The sin of Adam passed on to all people until the time GOD gave the Ten Commandments. Romans 5:12-14 Before the Ten Commandments were given all people died because of Adams sin but the entrance of the law, the Ten Commandments, changed this. Ezekiel 18:20-32 Here GOD speaks of repentance, of turning away from sin. The children under the law died for their own sins and no longer died because of the sin of one man, Adam. Death reigned from Adam to Moses before the law because of Adams sin but under the law this changed, now everyone would die for their own sin. The law made our sins personal to us rather than a generational curse. All people still die because no one can keep the law but they do so as individuals. Sin became a personal responsibility. This projects us to the idea of grace also being a personal responsibility. Once under grace we are no longer under the law. Just as the the law removed sin because one man’s sin, Christ removes sin from one man who receives him.
Therefore, from Adam to Moses death reigned on all because of one man’s sin. Then with Moses and the law sin became personal to each of us. Then by the new covenant in Christ sin can finally be removed through grace. Everyone still dies but do they die under the law or under grace.
GOD elects in this age the people HE knows will repent and submit their lives to HIM. The spirit of GOD accomplishes for us what we need and cannot do of ourselves. This Holy Spirit is sown as a seed in us and when sown is sown in a perishable body of flesh and sown in dishonor, sown in weakness but at the resurrection is raised in honor and power in a spirit body. 1 Corinthians 15:42-44 Even though the responsibility for sin and payment for it, the wages of sin is death, has changed from guilt by association to guilt by personal guilt the penalty is the same and whether before the law or after the law the grace in Christ is the only saving vehicle GOD has given. Therefore all indeed have sinned and have fallen short of the glory of GOD. The law entered to make sin even more sinful because it specifies what sin is and makes each person responsible. The new covenant is our willingness to give up this responsibility and turn it over to GOD and Christ. Then HE who began a good work in you will complete it in the day of Christ Jesus. Your life now totally belongs to GOD and it is GOD who will work in you both to will and to do HIS good pleasure.
We have went from Adam to Moses to Christ and GOD has in all these times had a number of HIS elect saints; before the law Able, Enoch, Noah, Abraham, Isaac, Jacob and Joseph. The after the law; Moses, Joshua, Caleb, Aaron, Miriam, Samuel, David and all the prophets. Then from Christ forward as many as the Lord our GOD shall call and add to HIS church. These people are your spiritual family in Christ. We along with them all will be glorified together in the day of the Lord Jesus.