'Truthfulness' in the Bible

I have not ignored your righteousness in my heart; instead, I have proclaimed your faithfulness and deliverance. I have not concealed your gracious love and truthfulness from the great congregation.

LORD, do not withhold your mercy from me, for your gracious love and truthfulness will keep me safe continuously.

A king who judges with truthfulness [to] the poor, his throne will be established forever.

none calleth for justice, none pleadeth in truthfulness. They trust in vanity, and speak falsehood; they conceive mischief, and bring forth iniquity.