Psalm 33:4

For the word of the Lord [is] right
The revealed word of God: the law of God is right; its precepts are holy, just, and good; its sanction or penalty is righteous; it is impartial unto all; it is just in condemning the wicked, and in acquitting believers on the account of Christ's perfect righteousness, by which it is magnified and made honourable: the Gospel part of the word is right; it publishes right and good things; it directs to the right way, to heaven and happiness; it makes men right when it works effectually in them; it engages them to walk in right ways; and its doctrines are right or plain to them that have a spiritual understanding given them; and all this is matter of joy and praise;

and all his works [are done] in truth;
his works of creation are done in the truth of things, with the utmost exactness and accuracy, and are a wonderful display of his power, wisdom, and goodness: his works of providence are according to the counsel of his own will, and are done in the wisest and best manner; and his work of redemption is a proof of his veracity and faithfulness to his covenant oath and promise; and his work of grace upon the hearts of his people is truth in the inward parts; and which, as he has promised to carry on and finish, he is faithful and will do it; in short, his way of acting both towards the godly and ungodly agrees with his promises to the one and his threatenings to the other, and so is in truth; and the whole of this is a reason why the saints should praise the Lord.