Liar

Proverbs 19:22 The desire of a man is his kindness: and a poor man is better than a liar.

A poor man is better than a liar.

Proverbs 12:22 22 Lying lips are abomination to the Lord: but they that deal truly are his delight.

Lying lips are an abomination to the lord.

John 8:44 Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.

Liars are the worst.

Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it. (John 8:44 [KJV])

Liars are of satan.

King James Version (1769) with Strongs Numbers and Morphology  and CatchWords: Psalms Chapter 120
 [1] In my distress I cried unto the LORD, and he heard me.
 [2] Deliver my soul, O LORD, from lying lips, and from a deceitful tongue.
 [3] What shall be given unto thee? or what shall be done unto thee, thou false tongue?
 [4] Sharp arrows of the mighty, with coals of juniper.
 [5] Woe is me, that I sojourn in Mesech, that I dwell in the tents of Kedar!
 [6] My soul hath long dwelt with him that hateth peace.
 [7] I am for peace: but when I speak, they are for war.

How to deal with liars

Resist satan and depart from evil.

Submit yourselves therefore to God. Resist the devil, and he will flee from you. — KJV, James 4:7

So resist and depart from the liar.

See also