Psalm 13 is a lament of David crying out to God under the weight of prolonged suffering, apparent divine silence, and the triumph of enemies. This exposition traces the movement of the psalm from anguished questioning through earnest petition to confident trust, showing how the saint of God is equipped to endure seasons of spiritual desolation without abandoning faith in God's covenant mercy. Main points: - the complaint of the psalmist — the fourfold "how long" and the nature of felt divine absence - the petition of the psalmist — crying to God for light, life, and vindication - the confidence of the psalmist — resting in God's mercy and singing of his salvation Scripture references: - Psalms 11:1; 11:4-7; 12:1-5; 13:1-6 - Romans 8:28