Whose mouths must be stopped, who subvert whole houses, teaching things which they ought not, for filthy lucre's sake.
They must be silenced, because they are disrupting whole households by teaching things they ought not to teach — and that for the sake of dishonest gain.
οὓς δεῖ ἐπιστομίζειν· οἵτινες ὅλους οἴκους ἀνατρέπουσιν, διδάσκοντες ἃ μὴ δεῖ, αἰσχροῦ κέρδους χάριν.
oys dei epistomizein· oitines oloys oikoys anatrepoysin, didaskontes a mē dei, aischroy kerdoys charin.