'Liar' in the Bible

If it isn't so now, who will prove me a liar, and make my speech worth nothing?"

Notwithstanding my right I am considered a liar. My wound is incurable, though I am without disobedience.'

An evildoer heeds wicked lips. A liar gives ear to a mischievous tongue.

That which makes a man to be desired is his kindness. A poor man is better than a liar.

Don't you add to his words, lest he reprove you, and you be found a liar.