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.

Kai aytē estin ē entolē aytoy, ina pisteysōmen tō onomati toy yioy aytoy Iēsoy Christoy, kai agapōmen allēloys, kathōs edōken entolēn.

King James Version (KJV)

And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.

Modern English

And this is his command: to believe in the name of his Son, Jesus Christ, and to love one another as he commanded us.