People today are usually careful about their personal hygiene. People want to be physically clean. But there is another kind of hygiene that is equally important. And lack of it is in fact shameful.
Jesus gives a whole list of such things.
Mark 7:20 Further, he said: “That which comes out of a man is what defiles him. 21 For from inside, out of the heart of men, come injurious reasonings: sexual immorality, thefts, murders, 22 acts of adultery, greed, acts of wickedness, deceit, brazen conduct, an envious eye, blasphemy, haughtiness, and unreasonableness. 23 All these wicked things come from within and defile a man.”
Revelation 21:8 speaks about similar things:
But as for the cowards and those without faith and those who are disgusting in their filth and murderers and the sexually immoral and those practicing spiritism and idolaters and all the liars, their portion will be in the lake that burns with fire and sulfur. This means the second death.”