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1 John 1:8
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ἐὰν εἴπωμεν ὅτι ἁμαρτίαν οὐκ ἔχομεν, ἑαυτοὺς πλανῶμεν, καὶ ἡ ἀλήθεια οὐκ ἔστιν ἐν ἡμῖν.
If we say we have no sin, we deceive ourselves, and the truth is not in us.