Matthew 26:48

Ὁ δὲ παραδιδοὺς αὐτὸν ἔδωκεν αὐτοῖς σημεῖον λέγων Ὃν ἂν φιλήσω αὐτός ἐστιν κρατήσατε αὐτόν

ho de paradidous auton edōken autois sēmeion legōn Hon an philēsō autos estin kratēsate auton

- however delivering up him he gave to them a sign saying Whom - I shall kiss Himself is seize Him