The realism of [Psalm 55] is a reminder of the anguish of life for so many in the cities of the world. We look for a city “built as a city should be” (Ps 122:3), one with good foundations “whose architect and builder is God” (Heb. 11:10), but in the meantime we live by faith in vile cities where the watchmen Evil and Trouble make the rounds of their walls and Oppression and Deceit do business in the public square.

MARVIN TATE, PSALMS 51-100, VOLUME 20 (WORD BIBLICAL COMMENTARY), 59.