In the Franciscan school, God did not need to be paid in order to love and forgive God’s own creation for its failures. Love cannot be bought by some “necessary sacrifice”; if it could, it would not and could not work its transformative effects. Try loving your spouse or children that way, and see where it gets you. Scotus and his followers were committed to protecting the absolute freedom and love of God. If forgiveness needs to be bought or paid for, then it is not authentic forgiveness at all, which must be a free letting-go.