According to Martin Luther:
The greatest wonder ever on earth is that the Son of God died! The shameful death of the cross. It is astonishing that the Father should say to His only Son, who by nature is God: Go, let them hang you on the gallows. The love of the everlasting Father was immeasurably greater towards His only begotten Son than the love of Abraham towards Isaac. The Father testifies from heaven: “This is my beloved Son, in whom I am well pleased,” yet He was cast away so lamentably like a worm, a scorn of men, and outcast of the people.
At this, the blind understanding of man stumbles. We ask, “If Christ is the only begotten Son of the everlasting Father, how, then, can God deal so unmercifully with Him?” He showed Himself more kind to Caiaphas, Herod, and Pilate than towards His only begotten Son. But to us true Christians, it is the greatest comfort; for we therein recognize that the merciful Lord God and Father so loved the poor condemned world, that He spared not His only begotten Son, but gave Him up for us all, that whoever believeth in Him should not perish, but have everlasting life (Table Talk, 132).