If I wanted to forgive someone for wronging me, I'd just forgive. I wouldn't have to sacrifice anything in order to do it.
Whatever it was that God had in mind (saving us, pardoning us, or whatever), why was it necessary to sacrifice Jesus for it?
Another way of seeing it isn't that Jesus had to die in order for God to forgive us; but rather that Jesus, as God Himself coming to us and among us and suffering with us is the demonstration of His love and forgiveness for us.
Satisfaction Theory is an umbrella term that describes several theories/theologies regarding the Atonement, that is, how in/through Jesus we are reconciled to God.
According to St. Anselm of Canterbury, an 11th century theologian and philosopher, the idea was that because through man's sin God's honor has been offended and in need to be satisfied (to this end he wrote the work
Cur Deus Homo?). Since God is Lord and mankind are His subjects (remember the feudal European setting in which this theology was articulated) we have have offended God's honor which needs to be restituted, which due to man's sinfulness is impossible on our part; therefore only a man who is equal to God can restitute and satisfy God's offended lordly honor. Therefore God became man as Jesus in order to satisfy humanity's honor debt; to satisfy that debt on behalf of man as One equal with God because He is God.
Under St. Thomas Aquinas it was not God's honor that was offended, but God's justice. This Thomistic form of Satisfaction Theory ultimately became official Roman Catholic teaching. God's justice has been infringed, man's sin has breached justice and there must be a satisfaction; again, Jesus as the God-Man alone can satisfy this problem.
Under some early Protestant theologians, such as John Calvin and others, the Law has been breached, and the breaching of the Law demands death, Jesus as the God-Man alone can meet the infinite requirements of the Law in order to, vicariously on our behalf, satisfy them thereby reconciling/atoning us before God.
This latter idea is usually called Penal Substitution, Jesus has become our substitute in order to satisfy the strict penal condemnation which the Divine Law demands.
Thus, generally, under Satisfaction Theory what's needed is, of course, satisfaction without which we remain legally and morally estranged from God and held under the weight of His condemnation as universally guilty of having offended/breached/trespassed His honor/justice/law. Thus in order to remove our universal guilt a satisfaction must be made, that happens in and through Jesus as the God-Man who restitutes/satisfies God's offended honor, or breached justice, or bears the weight of the law's harsh penal demands--which becomes the only means by which that universal guilt can be removed, thereby making us forgiven and reconciling us to the God we have so deeply offended.
I don't subscribe to Satisfaction Theory in any of its forms and I'm not alone.
The Atonement story often told by Christians in antiquity looks remarkably different. Let's consider
Ransom Theory:
Under Ransom Theory because of our sin we have become victims of the devil's evil tyranny, who is a thief and a murderer; we are now subjects of an oppressive regime of death and destruction which has reigned over us since Adam. God, who is unwilling to let His creation, particularly man, suffer and be lost forever will not stand by and do nothing. He condescends to meet us where we are, as Jesus Christ. God hands Jesus over to the devil as a ransom for mankind, the devil takes the deal and through the instrumentation of Rome has Jesus killed. The devil sees this as a victory, but God has an ace up His sleeve, He has tricked the ultimate trickster. Jesus harrows Hell, crushing the doors of Hell, trampling over the devil, bestowing life to all in the grave and rising again three days later. Thus the stranglehold of the devil over man is defeated, death's grasp is loosened (Jesus is risen from the dead and we too shall rise from the dead), and in Jesus we share in His victory over sin, death, hell and the devil and having been liberated from the devil's POW camp have been brought back into the freedom of sharing life with God.
That's a radically different story than the one told under Satisfaction Theory.
We can also consider another ancient Christian story of Atonement, known as
Recapitulation Theory. Under Recapitulation Theory God's act in and through Jesus is to recapitulate and undo what Adam has done. Jesus, therefore, is the Second Adam, the new beginning of and for mankind. Through Adam who was disobedient, death and sin entered the world; but through Jesus who was obedient, resurrection from the dead and freedom from sin has come to all. To this end God has become what we are so that we can become as He is, He has come and shared in our life and death so that we can share in His life and resurrection from the dead. God has become a participant in all things human in order that human beings can become a participant in all the things of God.
Elements of these latter theories are united in a more modern/Western iteration known as
Christus Victor Theory. Which is more or less where I fall in the conversation.
Christ did not die in order that God could forgive us, but Christ has come to proclaim God as God is; He is Love and Mercy and Forgiveness for us. God loves us even though we mess up and sin and God will not stand idly by and let us suffer and be subject to the tyranny of sin, hell and death. Thus God, in Christ, comes and becomes a full participant in our humanity, living, breathing, suffering and yes dying. Jesus becomes chief Victim, God willingly offers Himself up and over to us out of love and His compassion. But paradoxically in dying, Jesus descends into Hell/the dead and tramples upon the devil and crushes those ancient doors and leads captives free; rising from the dead He has vanquished death, vanquished sin, vanquished the oppressive power structures of this world. God has identified with the lowly, identified with the poor, identified with the weak, the oppressed, the frail, and the suffering of and in this world and has revealed Himself in and through these things. Our salvation is God's freely given and unconditional grace revealed and given to us through Jesus who offers Himself to us in weakness and fragility: God Himself as a full participant in the weakness and fragility of our human flesh, willingly becoming Victim with the victims, Downtrodden with the downtrodden, and Friend of the sinners. For the purpose of restoring us with and in Him out from the tyranny of death, the tyranny of a world governed by war and pain to see in Christ and the hope of Christ the better and reconciled world made manifest in the Resurrection and made consummate at His Parousia in the end: The kingdom of God.
-CryptoLutheran