Matthew 26:48 in the King James Version
Now he that betrayed him gave them a sign, saying, Whomsoever I shall kiss, that same is he: hold him fast.
Context
47 While he was still speaking, behold, Judas, one of the twelve, came, and with him a great multitude with swords and clubs, from the chief priests and elders of the people.
48 Now he who betrayed him had given them a sign, saying, “Whoever I kiss, he is the one. Seize him.”
49 Immediately he came to Jesus, and said, “Greetings, Rabbi!” and kissed him.