1Jn 4 (King James)

¹ Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
² Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
³ And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
⁴ Ye are of God, little children, and have overcome them: because greater is he that is in you, than he that is in the world.
⁵ They are of the world: therefore speak they of the world, and the world heareth them.
⁶ We are of God: he that knoweth God heareth us; he that is not of God heareth not us. Hereby know we the spirit of truth, and the spirit of error.
⁷ Beloved, let us love one another: for love is of God; and every one that loveth is born of God, and knoweth God.
⁸ He that loveth not knoweth not God; for God is love.
⁹ In this was manifested the love of God toward us, because that God sent his only begotten Son into the world, that we might live through him.
¹⁰ Herein is love, not that we loved God, but that he loved us, and sent his Son to be the propitiation for our sins.
¹¹ Beloved, if God so loved us, we ought also to love one another.
¹² No man hath seen God at any time. If we love one another, God dwelleth in us, and his love is perfected in us.
¹³ Hereby know we that we dwell in him, and he in us, because he hath given us of his Spirit.
¹⁴ And we have seen and do testify that the Father sent the Son to be the Saviour of the world.
¹⁵ Whosoever shall confess that Jesus is the Son of God, God dwelleth in him, and he in God.
¹⁶ And we have known and believed the love that God hath to us. God is love; and he that dwelleth in love dwelleth in God, and God in him.
¹⁷ Herein is our love made perfect, that we may have boldness in the day of judgment: because as he is, so are we in this world.
¹⁸ There is no fear in love; but perfect love casteth out fear: because fear hath torment. He that feareth is not made perfect in love.
¹⁹ We love him, because he first loved us.
²⁰ If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?
²¹ And this commandment have we from him, That he who loveth God love his brother also.

1Jn 4 (Stephanus 1550)

¹ ἀγαπητοὶ, 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 αὐτοὺς, ὅτι μείζων ἐστὶν ὁ ἐν ὑμῖν ἢ ὁ ἐν τῷ κόσμῳ
⁵ αὐτοὶ ἐκ τοῦ κόσμου εἰσὶν, 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 ἀγαπητοὶ, ἀγαπῶμεν ἀλλήλους, ὅτι ἡ ἀγάπη ἐκ τοῦ θεοῦ ἐστιν, καὶ πᾶς ὁ ἀγαπῶν, ἐκ τοῦ θεοῦ γεγέννηται, καὶ γινώσκει τὸν θεόν
⁸ μὴ ἀγαπῶν, οὐκ ἔγνω τὸν θεὸν, ὅτι ὁ θεὸς ἀγάπη ἐστίν
⁹ ἐν τούτῳ ἐφανερώθη ἡ ἀγάπη τοῦ θεοῦ ἐν ἡμῖν, ὅτι τὸν υἱὸν αὑτοῦ τὸν μονογενῆ ἀπέσταλκεν ὁ θεὸς εἰς τὸν κόσμον, ἵνα ζήσωμεν δι᾽ αὐτοῦ
¹⁰ ἐν τούτῳ ἐστὶν ἡ ἀγάπη, οὐχ ὅτι ἡμεῖς ἠγαπήσαμεν τὸν θεὸν, ἀλλ᾽ ὅτι αὐτὸς ἠγάπησεν ἡμᾶς, καὶ ἀπέστειλεν τὸν υἱὸν αὑτοῦ ἱλασμὸν περὶ τῶν ἁμαρτιῶν ἡμῶν
¹¹ ἀγαπητοὶ, 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 ἐστὶν ἐν ἡμῖν
¹³ ἐν τούτῳ γινώσκομεν ὅτι ἐν αὐτῷ μένομεν καὶ αὐτὸς ἐν ἡμῖν, ὅτι ἐκ τοῦ πνεύματος αὑτοῦ δέδωκεν ἡμῖν
¹⁴ καὶ ἡμεῖς τεθεάμεθα, καὶ μαρτυροῦμεν ὅτι ὁ πατὴρ ἀπέσταλκεν τὸν υἱὸν σωτῆρα τοῦ κόσμου
¹⁵ ὃς ἂν ὁμολογήσῃ ὅτι ἰησοῦς 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 ἐστὶν, καὶ ὁ μένων ἐν τῇ ἀγάπῃ, ἐν τῷ θεῷ μένει, καὶ ὁ θεὸς ἐν αὐτῷ
¹⁷ ἐν τούτῳ τετελείωται ἡ ἀγάπη μεθ᾽ ἡμῶν, ἵνα παῤῥησίαν 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 αὐτὸν, ὅτι αὐτὸς πρῶτος ἠγάπησεν ἡμᾶς
²⁰ ἐάν τις εἴπῃ, ὅτι ἀγαπῶ τὸν θεὸν, καὶ τὸν ἀδελφὸν αὑτοῦ μισῇ, ψεύστης ἐστίν ὁ γὰρ μὴ ἀγαπῶν τὸν ἀδελφὸν αὑτοῦ ὃν ἑώρακεν, τὸν θεὸν ὃν οὐχ ἑώρακεν, πῶς δύναται ἀγαπᾶν
²¹ καὶ ταύτην τὴν ἐντολὴν ἔχομεν ἀπ᾽ αὐτοῦ, ἵνα ὁ ἀγαπῶν τὸν θεὸν, ἀγαπᾷ καὶ τὸν ἀδελφὸν αὑτοῦ

1Jn 4 (Vulgate)

¹ Carissimi, nolite omni spiritui credere, sed probate spiritus si ex Deo sint : quoniam multi pseudoprophetæ exierunt in mundum.
² In hoc cognoscitur Spiritus Dei : omnis spiritus qui confitetur Jesum Christum in carne venisse, ex Deo est :
³ et omnis spiritus qui solvit Jesum, ex Deo non est, et hic est antichristus, de quo audistis quoniam venit, et nunc jam in mundo est.
⁴ Vos ex Deo estis filioli, et vicistis eum, quoniam major est qui in vobis est, quam qui in mundo.
⁵ Ipsi de mundo sunt : ideo de mundo loquuntur, et mundus eos audit.
⁶ Nos ex Deo sumus. Qui novit Deum, audit nos ; qui non est ex Deo, non audit nos : in hoc cognoscimus Spiritum veritatis, et spiritum erroris.
⁷ Carissimi, diligamus nos invicem : quia caritas ex Deo est. Et omnis qui diligit, ex Deo natus est, et cognoscit Deum.
⁸ Qui non diligit, non novit Deum : quoniam Deus caritas est.
⁹ In hoc apparuit caritas Dei in nobis, quoniam Filium suum unigenitum misit Deus in mundum, ut vivamus per eum.
¹⁰ In hoc est caritas : non quasi nos dilexerimus Deum, sed quoniam ipse prior dilexit nos, et misit Filium suum propitiationem pro peccatis nostris.
¹¹ Carissimi, si sic Deus dilexit nos : et nos debemus alterutrum diligere.
¹² Deum nemo vidit umquam. Si diligamus invicem, Deus in nobis manet, et caritas ejus in nobis perfecta est.
¹³ In hoc cognoscimus quoniam in eo manemus, et ipse in nobis : quoniam de Spiritu suo dedit nobis.
¹⁴ Et nos vidimus, et testificamur quoniam Pater misit Filium suum Salvatorem mundi.
¹⁵ Quisquis confessus fuerit quoniam Jesus est Filius Dei, Deus in eo manet, et ipse in Deo.
¹⁶ Et nos cognovimus, et credidimus caritati, quam habet Deus in nobis. Deus caritas est : et qui manet in caritate, in Deo manet, et Deus in eo.
¹⁷ In hoc perfecta est caritas Dei nobiscum, ut fiduciam habeamus in die judicii : quia sicut ille est, et nos sumus in hoc mundo.
¹⁸ Timor non est in caritate : sed perfecta caritas foras mittit timorem, quoniam timor pœnam habet : qui autem timet, non est perfectus in caritate.
¹⁹ Nos ergo diligamus Deum, quoniam Deus prior dilexit nos.
²⁰ Si quis dixerit : Quoniam diligo Deum, et fratrem suum oderit, mendax est. Qui enim non diligit fratrem suum quem vidit, Deum, quem non vidit, quomodo potest diligere ?
²¹ Et hoc mandatum habemus a Deo : ut qui diligit Deum, diligat et fratrem suum.