συγκαθιέναι ἑαυτόν

From LSJ

μὴ δῶτε τὸ ἅγιον τοῖς κυσὶν μηδὲ βάλητε τοὺς μαργαρίτας ὑμῶν ἔμπροσθεν τῶν χοίρων → give not that which is holy unto the dogs, neither cast ye your pearls before swine

Source

Greek > English (Woodhouse)

let oneself down, lower oneself