δίκην διδόναι
From LSJ
Δελφῖνα νήχεσθαι διδάσκεις: ἐπὶ τῶν ἐν ἐκείνοις τινὰ παιδοτριβούντων, ἐν οἷς ἤσκηται → Teaching dolphins to swim: is applied to those who are teaching something among people who are already well versed in it
Greek > English (Woodhouse)
be punished for, be punished, make atonement for, pay penalty for, pay the penalty, smart for a thing, suffer for
