Jamieson, Fausset and Brown on Psalms 55:1

PSALM 55

Psa 55:1-23. In great terror on account of enemies, and grieved by the treachery of a friend, the Psalmist offers an earnest prayer for relief. He mingles confident assurances of divine favor to himself with invocations and predictions of God's avenging judgments on the wicked. The tone suits David's experience, both in the times of Saul and Absalom, though perhaps neither was exclusively before his mind.

1. hide not thyself, &c.--(compare Psa 13:1; 27:9), withhold not help.