Luke 22:48

It must be used I think by way of question, as if he arrests the traitor with a lover's affection. He says, Betrayest thou with a kiss? that is, dost thou inflict a wound with the pledge of love? with the instruments of peace dost thou impose death? a slave, dost thou betray thy Lord; a disciple, thy master; one chosen, Him who chose thee? O great manifestation of Divine power, great discipline of virtue! Both the design of thy traitor is detected, and yet forbearance is not withheld. He shows whom it is Judas betrays, by manifesting things hidden; He declares whom he delivers up, by saying, the Son of man, for the human flesh, not the Divine nature, is seized. That however which most confounds the ungrateful, is the thought that he had delivered up Him, who though He was the Son of God, yet for our sakes wished to be the Son of man; as if He said, "For thee did I undertake, O ungrateful man, that which thou betrayest in hypocrisy. Our Lord kissed him, not that He would teach us to dissemble, but both that He might not seem to shrink from the traitor, and that He might the more move him by not denying him the offices of love.

But John saith, that even to the very moment He continued to reprove him, saying, "Judas, betrayest thou the Son of Man with a kiss?" Art thou not ashamed even of the form of the betrayal? saith He. Nevertheless, forasmuch as not even this checked him, He submitted to be kissed, and gave Himself up willingly; and they laid their hands on Him, and seized Him that night on which they ate the passover, to such a degree did they boil with rage, and were mad. However, they would have had no strength, unless He had Himself suffered it. Yet this delivers not Judas from intolerable punishment, but even more exceedingly condemns him, for that though he had received such proof of His power, and lenity, and meekness, and gentleness, he became fiercer than any wild beast.

And He gives him his proper name, which was rather like one lamenting and recalling him, than one provoked to anger. But He said not, "Betrayest thou thy Master, thy Lord, thy Benefactor," but the Son of man, that is, the humble and meek, who though He were not thy Master and Lord, forasmuch as He has borne himself so gently toward thee, should have never been betrayed by thee.

The Lord when He was betrayed first said this which Luke mentions, Betrayest thou the Son of man with a kiss? next, what Matthew says, Friend, wherefore art thou come? and lastly, what John records, Whom seek ye?

Unmindful of the glory of Christ, he thought to be able to act secretly, daring to make an especial token of love the instrument of his treachery.