ὅρκοις κεκλῄμεθα

From LSJ

ἔκδοτον σεαυτὴν τῷ σύροντι ποταμῷ τῶν πραγμάτων ἐᾶσαι → abandon yourself to the eddying flow of events

Source

Greek > English (Woodhouse)

we are bound by oaths