'Unclean' in the Bible

Because for long enough, in times past, we have been living after the way of the Gentiles, given up to the desires of the flesh, to drinking and feasting and loose behaviour and unclean worship of images;

Keep watch over the flock of God which is in your care, using your authority, not as forced to do so, but gladly; and not for unclean profit but with a ready mind;