Commentaries:
Jamieson, Fausset, and Brown
God's perfection is the source of his own, which has resulted from his trust on the one hand, and God's promised help on the other.
tried—"as metals are tried by fire and proved genuine" (Psalms 12:6). Shield (Psalms 3:3). Girding was essential to free motion on account of the looseness of Oriental dresses; hence it is an expressive figure for describing the gift of strength.
Other Jamieson, Fausset, and Brown entries containing Psalms 18:31:
Psalms 28:1
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