Since our Lord Jesus Christ was without sin (for He committed no sin, He Who took away the sin of the world, nor was there any deceit found in His mouth) He was not subject to death, since death came into the world through sin. He dies, therefore, because He took on Himself death on our behalf, and He makes Himself an offering to the Father for our sakes. For we had sinned against Him, and it was meet that He should receive the ransom for us, and that we should thus he delivered from the condemnation.

St John of Damascus