Verse 17. Witnesses - Thy judgments, which are the evidences both of my sins, and of thy wrath. Indignation - My miseries are the effects of thine anger. Army - Changes may denote the various kinds, and an army the great number of his afflictions.
Verse 20. Cease - My life is short, and of itself hastens to an end, there is no need that thou shouldest grudge me some ease for so small a moment.