God never intended for man to die. In fact He never intended for anything to die, but because of the rebellion of satan, death had to come in as judgment on mankind. God had placed two trees in the center of the garden of Eden. He commanded man not to eat of one of them, and when he did, he became sinful, and therefore had to die.
But in God’s mercy, man didn’t die suddenly, all at once. First his spirit died, and he could no longer hear the voice of God in the garden. His soul, (mind, emotions, will) took over control of his life, and he began to live by what he thought. After all, he now knew the difference between right and wrong, even though he was powerless to be perfectly good. Knowing the state man was in after the fall, God quickly placed cherubim to guard the way to the tree of life and drove Adam and Eve from the garden.The ground was cursed before man, and it produced weeds and thorns spontaneously. Man had to work hard to grow food. Before the fall, food grew freely without effort. Even the animals were cursed after the fall. All of this is shown in Genesis 3. Man still had what we consider a long life life, but eventually his body died.
If God had not blocked the way to the tree of life, and cast man from the garden, man would have eaten from the tree of life. To do that in his fallen state would have meant there would no longer have been any possibility of redemption.Just as fallen angels, cannot be redeemed because they are eternal beings, not subject to death, so man’s own state would have been, if God had not been so merciful as to cut off the way to the tree of life, and to cast man from the garden.
He sentenced man to death for his sin; knowing He would send His Son to die on the cross for them. Knowing that the sinless Blood of the Lamb of God would pay the debt man owed for his sin, and restore his relationship with God. Not only so, but Romans 8:19-22 says, “For the anxious longing of the creation waits eagerly for the revealing of the sons of God. For the creation was subjected to futility, not willingly, but because of Him who subjected it, in hope that the creation itself also will be set free from its slavery to corruption into the freedom of the glory of the children of God. For we know that the whole creation groans and suffers the pains of childbirth together until now”
The important thing for us to understand about death is that in Hebrews 9:27 says, “In as much as it is appointed unto man once to die and after that comes judgement.” God has allowed us our lifetime to come to Him, and to repent of our sin. After death, comes judgment. Once you die, it is over. No choices can be made after death. So death, while seeming to be such a terrible thing, was actually a marvelous provision from our merciful God, so that He Himself could come to redeem us. That leaves every human being with a choice to make. This choice has to be made while we live. Don’t put it off, if you haven’t already made that choice, make it now. He loves you so much. “I have set before you life and death, the blessing and the curse. So choose life in order that you may live, you and your descendants by loving the Lord your God and obeying His voice and holding fast to Him.” Deuteronomy 30: 19-20.