He who winks at sin becomes a partaker in it. God would have us put away the unclean thing from the midst of us, lest we be utterly polluted, and become an abomination in his sight. O you professors [of your faith] who are not living as you should live, you who are practicing secret sin, you members of the church who, unknown to us, are wallowing in evil, I do beseech you go forth from among us of your own accord, before the Lord launches out his plagues upon you. Get away from us lest double judgment fall upon you. As for us, when your case is clear, we dare not excuse you; we hate even the garment spotted with the flesh, and much more those filthy dreamers who wrap their lusts about them as a robe. If you have any reason left, you will surely prefer, if lost at all, to perish without incurring the double vengeance which awaits deceivers. Repent and forsake your iniquities that your sins may be blotted out, but if you will not do this, at least cease to dishonour the church of God by your false professions.1
Charles H. Spurgeon
12 These are hidden reefs at your love feasts, as they feast with you without fear, shepherds feeding themselves; waterless clouds, swept along by winds; fruitless trees in late autumn, twice dead, uprooted;