Ante-Nicene Fathers, Vol IX:
Epistle to Gregory and Origen's Commentary on the Gospel of John.: Chapter XXXV

35.  Jesus is a Lamb in Respect of His Human Nature.

If we enquire further into the significance of Jesus being pointed out by John, when he says, “This is the Lamb of God which taketh away the sin of the world,” we may take our stand at the dispensation of the bodily advent of the Son of God in human life, and in that case we shall conceive the lamb to be no other than the man.  For the man “was led like a sheep to the slaughter, and as a lamb, dumb before his shearers,” 4960 saying, “I was as like a gentle lamb led to the slaughter.” 4961   Hence, too, in the Apocalypse 4962 a lamb is seen, standing as if slain.  This slain lamb has been made, according to certain hidden reasons, a purification of the whole world, for which, according to the Father’s love to man, He submitted to death, purchasing us back by His own blood from him who had got us into his power, sold under sin.  And He who led this lamb to the slaughter was God in man, the great High-Priest, as he shows by the words: 4963   “No one taketh My life away from Me, but I lay it down of Myself.  I have power to lay it down, and I have power to take it again.”

Footnotes

Isa. liii. 7.

Jer. xi. 19.

Rev. 5.6.

John x. 18.