Psalms 144:8

When men become eminent for things as to which they have had few advantages, they should be more deeply sensible that God has been their Teacher. Happy those to whom the Lord gives that noblest victory, conquest and dominion over their own spirits. A prayer for further mercy is fitly begun with a thanksgiving for former mercy. There was a special power of God, inclining the people of Israel to be subject to David; it was typical of the bringing souls into subjection to the Lord Jesus. Man's days have little substance, considering how many thoughts and cares of a never-dying soul are employed about a poor dying body. Man's life is as a shadow that passes away. In their highest earthly exaltation, believers will recollect how mean, sinful, and vile they are in themselves; thus they will be preserved from self-importance and presumption. God's time to help his people is, when they are sinking, and all other helps fail.

Whose mouth speaketh vanity. No wonder that men who are vanity speak vanity. "When he speaketh a lie, he speaketh of his own. "They cannot be depended upon, let them promise as fairly as they may: their solemn declarations are light as the foam of the sea, in no wise to be depended upon. Good men desire to be rid of such characters: of all men deceivers and liars are among the most disgusting to true hearts. And their right hand is a right hand of falsehood. So far their hands and their tongues agree, for they are vanity and falsehood. These men act as falsely as they speak, and prove themselves to be all of a piece. Their falsehood is right handed, they lie with dexterity, they deceive with all their might. It is a dreadful thing when a man's expertness lies more in lies than in truth; when he can neither speak nor act without proving himself to be false. God save us from lying mouths, and hands of falsehood.