Matthew 26:47-49

And while he yet spake, lo, Judas, one of the twelve, came, and with him a great multitude with swords and staves, from the chief priests and elders of the people. Now he that betrayed him gave them a sign, saying, Whomsoever I shall kiss, that is he: take him. And straightway he came to Jesus, and said, Hail, Rabbi; and kissed him.