Parallel
1 John 5:2
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ἐν τούτῳ γινώσκομεν ὅτι ἀγαπῶμεν τὰ τέκνα τοῦ θεοῦ, ὅταν τὸν θεὸν ἀγαπῶμεν, καὶ τὰς ἐντολὰς αὐτοῦ τηρῶμεν.
By this we know that we love the children of God: when we love God and keep His commandments.