1 Πᾶς ὁ πιστεύων ὅτι ᾿Ιησοῦς ἐστιν ὁ Χριστός, ἐκ τοῦ Θεοῦ γεγέννηται, καὶ πᾶς ὁ ἀγαπῶν τὸν γεννήσαντα ἀγαπᾷ καὶ τὸν γεγεννημένον ἐξ αὐτοῦ.
2 ἐν τούτῳ γινώσκομεν ὅτι ἀγαπῶμεν τὰ τέκνα τοῦ Θεοῦ, ὅταν τὸν Θεὸν ἀγαπῶμεν καὶ τὰς ἐντολὰς αὐτοῦ τηρῶμεν.
3 αὕτη γάρ ἐστιν ἡ ἀγάπη τοῦ Θεοῦ, ἵνα τὰς ἐντολὰς αὐτοῦ τηρῶμεν· καὶ αἱ ἐντολαὶ αὐτοῦ βαρεῖαι οὐκ εἰσίν,
4 ὅτι πᾶν τὸ γεγεννημένον ἐκ τοῦ Θεοῦ νικᾷ τὸν κόσμον· καὶ αὕτη ἐστὶν ἡ νίκη ἡ νικήσασα τὸν κόσμον, ἡ πίστις ἡμῶν.
5 τίς ἐστιν ὁ νικῶν τὸν κόσμον εἰ μὴ ὁ πιστεύων ὅτι ᾿Ιησοῦς ἐστιν ὁ υἱὸς τοῦ Θεοῦ;
6 Οὗτός ἐστιν ὁ ἐλθὼν δι᾿ ὕδατος καὶ αἵματος, ᾿Ιησοῦς Χριστός· οὐκ ἐν τῷ ὕδατι μόνον, ἀλλ᾿ ἐν τῷ ὕδατι καὶ τῷ αἵματι· καὶ τὸ Πνεῦμά ἐστι τὸ μαρτυροῦν, ὅτι τὸ Πνεῦμά ἐστιν ἡ ἀλήθεια.
7 ὅτι τρεῖς εἰσιν οἱ μαρτυροῦντες ἐν τῷ οὐρανῷ, ὁ Πατήρ, ὁ Λόγος καὶ τὸ ῞Αγιον Πνεῦμα, καὶ οὗτοι οἱ τρεῖς ἕν εἰσι· καὶ τρεῖς εἰσιν οἱ μαρτυροῦντες ἐν τῇ γῇ,