1Th 1 Thessalonians, chapter First Epistle to the Thessalonians, chapter 1
ὅτι τὸ εὐαγγέλιον ἡμῶν οὐκ ἐγενήθη εἰς ὑμᾶς ἐν λόγῳ μόνον, ἀλλὰ καὶ ἐν δυνάμει, καὶ ἐν πνεύματι ἁγίῳ, καὶ ἐν πληροφορίᾳ πολλῇ, καθὼς οἴδατε οἷοι ἐγενήθημεν ἐν ὑμῖν δι᾿ ὑμᾶς. Rom 15:19