1 John 3:23

καὶ αὕτη ἐστὶν ἡ ἐντολὴ αὐτοῦ ἵνα πιστεύσωμεν τῷ ὀνόματι τοῦ υἱοῦ αὐτοῦ Ἰησοῦ Χριστοῦ καὶ ἀγαπῶμεν ἀλλήλους καθὼς ἔδωκεν ἐντολήν