Interlinear view shows the original Hebrew/Greek text with word-by-word translation (KJV).
1
Ὁ the/this/who πρεσβύτερος elder ἐκλεκτῇ select κυρίᾳ lady καὶ and τοῖς the/this/who τέκνοις child αὐτῆς he/she/it/self οὓς which ἐγὼ I/we ἀγαπῶ love ἐν in/on/among ἀληθείᾳ, truth καὶ and οὐκ no ἐγὼ I/we μόνος, alone ἀλλὰ but καὶ and πάντες all οἱ the/this/who ἐγνωκότες know τὴν the/this/who ἀλήθειαν, truth
2
διὰ through/beca… τὴν the/this/who ἀλήθειαν truth τὴν the/this/who μένουσαν stay ἐν in/on/among ἡμῖν, I/we καὶ and μεθ᾽ with/after ἡμῶν I/we ἔσται be εἰς toward τὸν the/this/who αἰῶνα· age
3
ἔσται be μεθ᾽ with/after ἡμῶν I/we χάρις grace ἔλεος mercy εἰρήνη peace παρὰ from with θεοῦ God πατρὸς father καὶ and παρὰ from with κυρίου lord Ἰησοῦ Jesus/Joshua Χριστοῦ Christ τοῦ the/this/who υἱοῦ son τοῦ the/this/who πατρὸς father ἐν in/on/among ἀληθείᾳ truth καὶ and ἀγάπῃ. love