Psalms 62:9

Vanity, i.e. most vain, impotent, and helpless creatures in themselves. This he delivers as a reason or argument to enforce his foregoing exhortation; trust in God, because there is no other person or thing to which you can safely trust. A lie, because they promise much, and raise men's expectations upon consideration of their great power and dignity, but are not able to perform, and generally deceive those who trust in them; in which respect lying is ascribed to a fountain, Jeremiah 15:18, to wine, Hosea 9:2, to the olive, Habakkuk 3:17, when they do not give what they promise.