1 John 1:8

Ἐὰν εἴπωμεν ὅτι ἁμαρτίαν οὐκ ἔχομεν, ἑαυτοὺς πλανῶμεν, καὶ ἡ ἀλήθεια οὐκ ἔστιν ἐν ἡμῖν.

Ean eipōmen oti amartian oyk echomen, eaytoys planōmen, kai ē alētheia oyk estin en ēmin.

King James Version (KJV)

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

Modern English

If we claim to be without sin, we deceive ourselves and the truth is not in us.