The Creed and core doctrine · Question 6
If the Father forgave only by killing his innocent Son, isn't that cruel?

The question: “Is the cross an angry God handing his Son the punishment instead?”
The Church's answer: The Father and the Son are not two gods with wills at odds with each other. The Father did not force an unwilling Son into sacrifice and vent his anger. The Father loved the world and sent the Son, and the Son, loving the Father and loving us, freely gave his own life. Jesus said, “No one takes my life from me; I lay it down of my own accord.”
The execution of Jesus was an injustice really committed by free human beings, and that responsibility does not evaporate. God did not call that evil good or dress it up as something necessary. Instead God came into the very middle of the worst violence people have made, carried the weight of sin and death himself, and opened the way of forgiveness, reconciliation, and resurrection. The cross is not a scene where God demanded somebody else's pain; it is the event in which God, in the Son, loved us to the end and gave himself away.
If they press further: “If God is almighty, why not just forgive? Why was the cross needed?” — no law stronger than God demanded blood and tied God's hands. At the same time, forgiveness is not a word that pretends the evil never happened. Christ really carried the rupture and the death that sin makes, set right human disobedience with obedience and love, and reconciled us with God. We cannot fully fathom why God chose this road, but what the cross shows is not an appetite for cruelty; it is a love that comes to the sinner first.
In one sentence: “The cross isn't the Father taking his anger out on an unwilling Son. It's the Father and the Son saving us with one love, the Son freely carrying our sin and our death.”