If we look from the begining of the world when God created Adam and Eve, they was no death but when Adam and Eve sin against God that was when death entered the world. According to Scripture, death was not part of God’s original design for humanity, but came as a consequence of disobedience. Through sin, human nature became separated from God, and this separation ultimately leads to physical death for all people. Death is therefore seen as a universal result of a fallen world.
Death is not the end of our life, the bible teaches us that when we die we will live eternal life in heaven if we do good while still in this world. It serves as a reminder of human limitation and the need for redemption.
“the wages of sin is death” (Romans 6:23)