ἐν τούτῳ φανερά ἐστι τὰ τέκνα τοῦ Θεοῦ καὶ τὰ τέκνα τοῦ διαβόλου. πᾶς ὁ μὴ ποιῶν δικαιοσύνην οὐκ ἔστιν ἐκ τοῦ Θεοῦ, καὶ ὁ μὴ ἀγαπῶν τὸν ἀδελφόν αὐτοῦ.