The major stress in the psalm [Psalm 54] is clearly on the powerful and effective Name of Yahweh. Yahweh may seem absent from the world, but those who invoke his Name with faith and courage will discover the reality of his awesome presence. Those who forget his Name and seek to disregard his will may experience the terrible recoil of their own wickedness, a recoil which is sustained by divine power. The message of the psalm is clear enough: the Name of Yahweh will not fail the suppliant in a time of crisis. The enemies will not prevail. Yahweh will make a necessary connection between act and consequence, and the power of ruthless foes will be turned back against themselves.
MARVIN TATE, PSALMS 51-100, VOLUME 20 (WORD BIBLICAL COMMENTARY), 48.