The consequences of Adam’s corruption are distinct from the punishment that Jesus will endure. For Eve and then for Adam, what once was easy and joyful by God’s creative work is now difficult and painful. The natural consequences of contradicting God’s design are a necessary witness against the human notion that we would make a better god than God. What happens when we try? Misery and death.
God expels Adam and Eve to keep them from “living” eternally in such a corrupted and miserable condition. God makes coverings for them from animal skins—the first sacrifice of another living thing in order to remedy their condition. This is the first parable pointing forward to Jesus, the lamb of God who bore away the sin of the world.