Matthew 26:48-50
26:48 (Now the betrayer had given them a sign, saying, “The one I kiss is the man. Arrest him!”)
26:49 Immediately he went up to Jesus and said, “Greetings, Rabbi,” and kissed him.
26:50 Jesus said to him, “Friend, do what you are here to do.” Then they came and took hold of Jesus and arrested him.