"The soul of man serves the purpose, as it were, of a workshop to Satan, in which to forge a thousand methods of despair. And therefore it is not without reason that David, after a severe conflict with himself, has recourse to prayer, and calls upon God as the witness of his sorrow."—Calvin on the Psalms.

"I will say unto God my rock, Why has thou forgotten me? why go I mourning because of the oppression of the enemy? As with a sword in my bones, mine enemies reproach me; while they say daily unto me, Where is thy God?"—Verses 9, 10.