v. 30 — They answered and said unto him, If this Man were not an evil-doer, we should not have …
Commentary on the Gospel according to John · St Cyril of Alexandria
They were perplexed for a specious plea against Him, but cloak the baseness of their impiety, and their apparent resolution to put Him to death unjustly, by the sophistical reply, that they would never have brought Jesus to suffer justice, if they had not taken Him in a criminal act. For they still affected to observe the Law, which bade them execute righteous judgment in all things; and, marvellous to relate, they use their respect for the Law as a weapon against the Lawgiver. They, who did not shrink from bringing an accusation against the Lawgiver, claimed credit as keepers of the Law. They declared that He That had come to take away sin had done evil, that the truth of the words that Christ spake, by the mouth of the Prophet Isaiah, might be seen: Woe unto them! for they have fled from Me: their doom is misery, because they have transgressed against Me. Though I have redeemed them, yet they have spoken lies against Me.
CyrJn 12.30.1