Matthew 26:48-50 AMP

[48] Now the betrayer had given them a sign, saying, “Whomever I kiss, He is the one; seize Him.” [49] Immediately Judas went to Jesus and said, “Greetings (rejoice), Rabbi!” And he kissed Him [in a deliberate act of betrayal]. [50] Jesus said to Judas, “Friend, do what you came for.” Then they came and seized Jesus and arrested Him.