Matthew 17:17
When he says, “How long shall I dwell with you who insult and are unbelieving?” (Matthew 17:17) he shows that the time of the incarnate presence required him to dwell with the not-good in God-befitting gentleness, so that through what he does he might correct them. “How long,” he says, “shall I dwell with you so insolent and unbelieving?” — showing that his presence with flesh compelled him to associate with the not-good in order to correct them.
Greek
Ὅταν δὲ εἴπῃ, ὅτι ἕως πότε συνδιαιτῶμαι ὑμῖν τοῖς οὕτως ὑβρί ζουσιν καὶ ἀπίστοις δείκνυσιν, ὅτι ὁ τῆς ἐνσάρκου παρουσίας καιρὸς ἀπῄτει αὐτὸν συνδιαιτᾶσθαι μετὰ θεοπρεποῦς ἡμερότητος τοῖς οὐκ ἀγαθοῖς, ἵνα αὐτοὺς δι' ὧν ποιεῖ διορθώσηται. Ἕως πότε, φησίν, συνδιαι τῶμαι ὑμῖν τοῖς οὕτως ὑβρισταῖς καὶ ἀπίστοις δεικνύων, ὅτι ἡ μετὰ σαρκὸς παρουσία αὐτοῦ ἠνάγκασεν αὐτὸν συναναστρέφεσθαι τοῖς οὐκ ἀγαθοῖς, ἵνα διορθώσηται αὐτούς.