1 Ἀγαπητοί, μὴ παντὶ πνεύματι πιστεύετε, ἀλλὰ δοκιμάζετε τὰ πνεύματα, εἰ ἐκ τοῦ Θεοῦ ἐστιν, ὅτι πολλοὶ ψευδοπροφῆται ἐξεληλύθασιν εἰς τὸν κόσμον. 2 Ἐν τούτῳ γινώσκετε τὸ Πνεῦμα τοῦ Θεοῦ: πᾶν πνεῦμα ὃ ὁμολογεῖ Ἰησοῦν Χριστὸν ἐν σαρκὶ ἐληλυθότα, ἐκ τοῦ Θεοῦ ἐστιν; 3 καὶ πᾶν πνεῦμα ὃ μὴ ὁμολογεῖ τὸν Ἰησοῦν, <χριστὸν ἐν σαρκὶ ἐληλυθότα> ἐκ τοῦ Θεοῦ οὐκ ἔστιν. καὶ τοῦτό ἐστιν τὸ τοῦ ἀντιχρίστου, ὃ ἀκηκόατε ὅτι ἔρχεται, καὶ νῦν ἐν τῷ κόσμῳ ἐστὶν ἤδη. 4 Ὑμεῖς ἐκ τοῦ Θεοῦ ἐστε, τεκνία, καὶ νενικήκατε αὐτούς, ὅτι μείζων ἐστὶν ὁ ἐν ὑμῖν, ἢ ὁ ἐν τῷ κόσμῳ. 5 αὐτοὶ ἐκ τοῦ κόσμου εἰσίν; διὰ τοῦτο ἐκ τοῦ κόσμου λαλοῦσιν, καὶ ὁ κόσμος αὐτῶν ἀκούει. 6 ἡμεῖς ἐκ τοῦ Θεοῦ ἐσμεν. ὁ γινώσκων τὸν Θεὸν, ἀκούει ἡμῶν. ὃς οὐκ ἔστιν ἐκ τοῦ Θεοῦ, οὐκ ἀκούει ἡμῶν. ἐκ τούτου γινώσκομεν τὸ πνεῦμα τῆς ἀληθείας καὶ τὸ πνεῦμα τῆς πλάνης. 7 Ἀγαπητοί, ἀγαπῶμεν ἀλλήλους; ὅτι ἡ ἀγάπη ἐκ τοῦ Θεοῦ ἐστιν; καὶ πᾶς ὁ ἀγαπῶν, ἐκ τοῦ Θεοῦ γεγέννηται, καὶ γινώσκει τὸν Θεόν. 8 ὁ μὴ ἀγαπῶν, οὐκ ἔγνω τὸν Θεόν; ὅτι ὁ Θεὸς ἀγάπη ἐστίν. 9 ἐν τούτῳ ἐφανερώθη ἡ ἀγάπη τοῦ Θεοῦ ἐν ἡμῖν, ὅτι τὸν Υἱὸν αὐτοῦ, τὸν μονογενῆ, ἀπέσταλκεν ὁ Θεὸς εἰς τὸν κόσμον, ἵνα ζήσωμεν δι’ αὐτοῦ. 10 ἐν τούτῳ ἐστὶν ἡ ἀγάπη, οὐχ ὅτι ἡμεῖς ἠγαπήκαμεν τὸν Θεόν, ἀλλ’ ὅτι αὐτὸς ἠγάπησεν ἡμᾶς, καὶ ἀπέστειλεν τὸν Υἱὸν αὐτοῦ, ἱλασμὸν περὶ τῶν ἁμαρτιῶν ἡμῶν. 11 Ἀγαπητοί, εἰ οὕτως ὁ Θεὸς ἠγάπησεν ἡμᾶς, καὶ ἡμεῖς ὀφείλομεν ἀλλήλους ἀγαπᾶν. 12 Θεὸν οὐδεὶς πώποτε τεθέαται; ἐὰν ἀγαπῶμεν ἀλλήλους, ὁ Θεὸς ἐν ἡμῖν μένει, καὶ ἡ ἀγάπη αὐτοῦ τετελειωμένη⇔ «ἐν ἡμῖν» ἐστιν. 13 ἐν τούτῳ γινώσκομεν ὅτι ἐν αὐτῷ μένομεν, καὶ αὐτὸς ἐν ἡμῖν, ὅτι ἐκ τοῦ Πνεύματος αὐτοῦ δέδωκεν ἡμῖν. 14 καὶ ἡμεῖς τεθεάμεθα καὶ μαρτυροῦμεν, ὅτι ὁ Πατὴρ ἀπέσταλκεν τὸν Υἱὸν Σωτῆρα τοῦ κόσμου. 15 ὃς ἐὰν ὁμολογήσῃ ὅτι Ἰησοῦς (Χριστός) ἐστιν ὁ Υἱὸς τοῦ Θεοῦ, ὁ Θεὸς ἐν αὐτῷ μένει, καὶ αὐτὸς ἐν τῷ Θεῷ. 16 καὶ ἡμεῖς ἐγνώκαμεν καὶ πεπιστεύκαμεν τὴν ἀγάπην ἣν ἔχει ὁ Θεὸς ἐν ἡμῖν. Ὁ Θεὸς ἀγάπη ἐστίν, καὶ ὁ μένων ἐν τῇ ἀγάπῃ, ἐν τῷ Θεῷ μένει, καὶ ὁ Θεὸς ἐν αὐτῷ μένει. 17 Ἐν τούτῳ τετελείωται ἡ ἀγάπη μεθ’ ἡμῶν, ἵνα παρρησίαν ἔχωμεν ἐν τῇ ἡμέρᾳ τῆς κρίσεως, ὅτι καθὼς ἐκεῖνός ἐστιν, καὶ ἡμεῖς ἐσμεν ἐν τῷ κόσμῳ τούτῳ. 18 φόβος οὐκ ἔστιν ἐν τῇ ἀγάπῃ, ἀλλ’ ἡ τελεία ἀγάπη ἔξω βάλλει τὸν φόβον; ὅτι ὁ φόβος κόλασιν ἔχει; ὁ δὲ φοβούμενος, οὐ τετελείωται ἐν τῇ ἀγάπῃ. 19 Ἡμεῖς ἀγαπῶμεν ὅτι αὐτὸς πρῶτος ἠγάπησεν ἡμᾶς. 20 ἐάν τις εἴπῃ, ὅτι Ἀγαπῶ τὸν Θεόν, καὶ τὸν ἀδελφὸν αὐτοῦ μισῇ, ψεύστης ἐστίν; ὁ γὰρ μὴ ἀγαπῶν τὸν ἀδελφὸν αὐτοῦ, ὃν ἑώρακεν, τὸν Θεὸν, ὃν οὐχ ἑώρακεν, οὐ δύναται ἀγαπᾶν. 21 καὶ ταύτην τὴν ἐντολὴν ἔχομεν ἀπ’ αὐτοῦ, ἵνα ὁ ἀγαπῶν τὸν Θεὸν, ἀγαπᾷ καὶ τὸν ἀδελφὸν αὐτοῦ.