Mark 14:44 in the King James Version
And he that betrayed him had given them a token, saying, Whomsoever I shall kiss, that same is he; take him, and lead him away safely.
Context
43 Immediately, while he was still speaking, Judas, one of the twelve, came—and with him a multitude with swords and clubs, from the chief priests, the scribes, and the elders.
44 Now he who betrayed him had given them a sign, saying, “Whomever I will kiss, that is he. Seize him, and lead him away safely.”
45 When he had come, immediately he came to him and said, “Rabbi! Rabbi!” and kissed him.