Hereby perceive we the love of God, because he laid down his life for us: and we ought to lay down our lives for the brethren.
This is how we know what love is: Jesus Christ laid down his life for us. And we ought to lay down our lives for our brothers and sisters.
Ἐν τούτῳ ἐγνώκαμεν τὴν ἀγάπην, ὅτι ἐκεῖνος ὑπὲρ ἡμῶν τὴν ψυχὴν αὐτοῦ ἔθηκεν· καὶ ἡμεῖς ὀφείλομεν ὑπὲρ τῶν ἀδελφῶν τὰς ψυχὰς τιθέναι.
En toytō egnōkamen tēn agapēn, oti ekeinos yper ēmōn tēn psychēn aytoy ethēken· kai ēmeis opheilomen yper tōn adelphōn tas psychas tithenai.