'Truth' in the Bible

That Yahweh may establish his word which he spoke concerning me, saying, 'If your children take heed to their way, to walk before me in truth with all their heart and with all their soul, there shall not fail you,' he said, 'a man on the throne of Israel.'

Solomon said, "You have shown to your servant David my father great loving kindness, according as he walked before you in truth, and in righteousness, and in uprightness of heart with you. You have kept for him this great loving kindness, that you have given him a son to sit on his throne, as it is this day.

The woman said to Elijah, "Now I know that you are a man of God, and that the word of Yahweh in your mouth is truth."

The king said to him, "How many times do I have to adjure you that you speak to me nothing but the truth in the name of Yahweh?"