'Liar' in the Bible
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.
Yet ye have not known him; but I know him: and if I should say, I know him not, I shall be a liar like unto you: but I know him, and keep his saying.
God forbid: yea, let God be true, but every man a liar; as it is written, That thou mightest be justified in thy sayings, and mightest overcome when thou art judged.
If we say that we have not sinned, we make him a liar, and his word is not in us.
He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.
If a man say, I love God, and hateth his brother, he is a liar: for he that loveth not his brother whom he hath seen, how can he love God whom he hath not seen?