Moral Uncleanness.

Morally impure; evil; vile: unclean thoughts. ... having a physical or moral blemish so as to make impure according to the laws, especially the dietary or ceremonial laws: an unclean animal; unclean persons.

IS IT TOTALLY NECESSARY FOR US TO UNDERSTAND SUCH THINGS ??

Why yes, because we are in great danger without this knowledge. Moral uncleanness is a spiritual/physical human condition, that every being experiences. This condition is described in the Hebrew language as "Vile."

Result of search for "Vile": 959 bazah baw-zaw' a primitive root; to disesteem:--despise, disdain, contemn(-ptible), + think to scorn, vile person.

2151 zalal zaw-lal' a primitive root (Compare 2107); to shake (as in the wind), i.e. to quake; figuratively, to be loose morally, worthless or prodigal:--blow down, glutton, riotous (eater), vile. 2933 tamah taw-maw' a collateral form of 2930; to be impure in a religious sense:--be defiled, be reputed vile. 3988 ma'ac maw-as' a primitive root; to spurn; also (intransitively) to disappear:--abhor, cast away (off), contemn, despise, disdain, (become) loathe(some), melt away, refuse, reject, reprobate, X utterly, vile person. 5034 nabel naw-bale' a primitive root; to wilt; generally, to fall away, fail, faint; figuratively, to be foolish or (morally) wicked; causatively, to despise, disgrace:--disgrace, dishounour, lightly esteem, fade (away, - ing), fall (down, -ling, off), do foolishly, come to nought, X surely, make vile, wither. 5036 nabal naw-bawl' from 5034; stupid; wicked (especially impious):-- fool(-ish, -ish man, -ish woman), vile person. 5039 nbalah neb-aw-law' feminine of 5036; foolishness, i.e. (morally) wickedness; concretely, a crime; by extension, punishment:--folly, vile, villany. 5240 nmibzeh nem-ib-zeh' from 959, despised:--vile. 7034 qalah kaw-law' a primitive root; to be light (as implied in rapid motion), but figuratively, only (be (causatively, hold) in contempt):--base, contemn, despise, lightly esteem, set light, seem vile. 7043 qalal kaw-lal' a primitive root; to be (causatively, make) light, literally (swift, small, sharp, etc.) or figuratively (easy, trifling, vile, etc.):--abate, make bright, bring into contempt, (ac-)curse, despise, (be) ease(-y, -ier), (be a, make, make somewhat, move, seem a, set) light(-en, -er, -ly, -ly afflict, -ly esteem, thing), X slight(-ly), be swift(-er), (be, be more, make, re-)vile, whet. 8182 sho`ar sho-awr' from 8176; harsh or horrid, i.e. offensive:--vile.

THERE IS ONLY ONE CURE FOR THE "VILE SITUATION," NO MATTER WHAT ANYONE SAYS, IT IS CALLED DELIVERANCE. THE WORLD CLAIMS IT HAS MANY WAYS TO ACHIEVE DELIVERANCE, BUT IT IS ALL FAKE NEWS.

Being vile will lead you to destruction of the beautiful creation you have been placed in, your body. Vileness is the fate of every human without deliverance. The problem is that every human is controlled by an unclean spirit living within them. Moral uncleanness is rampant and people are too proud to see the situation of their vileness. Deliverance is our only hope in this world.