The Lord reigneth; rather, is become King ( ἐβασίλευσεν, LXX.); comp. Psalms 10:16; Psalms 47:6; Psalms 96:10; Psalms 97:1, etc. God is regarded as having for a time laid aside, or hidden, his sovereignty, but as now at length coming forward and inaugurating the theocracy.
The writer may have in his mind some recent manifestation of Divine power, or he may be anticipating the final establishment of the reign of Messiah. He is clothed with majesty; or, "he hath robed himself in majesty" (Cheyne).
The Lord is clothed with strength, wherewith he hath girded himself; literally, the Lord is clothed, he hath girded himself, with strength (comp. "Awake, awake, put on strength, O arm of the Lord," Isaiah 51:9).
The world also is stablished, that it cannot be moved. When God "takes his kingdom," he firmly establishes his sway over the earth, with its inhabitants, in such sort that "it cannot be moved"—it can suffer no violent agitation or disturbance.