When we study the plan of redemption and the human drama that started in Eden, we can have a clear but not complete understanding of the great love of God on behalf of humanity.
Some keywords in the plan of salvation are substitution, transfer, grace, mercy, and justice.
Before the fall of Adam and Eve, God had declared: “Of every tree of the garden thou mayest freely eat: But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die” (Genesis 2:16, 17).