Καὶ ἐν τούτῳ γινώσκομεν ὅτι ἐγνώκαμεν αὐτόν, ἐὰν τὰς ἐντολὰς αὐτοῦ τηρῶμεν.
And hereby we do know that we know him, if we keep his commandments.
Sabemos que lo hemos llegado a conocer si obedecemos sus mandamientos.