Gladness passes into awe in ver. 2_a_, as the seer beholds the cloud and gloom which encircle the throne. The transcending infinitude of the Divine nature, the mystery of much of the Divine acts, are symbolised by these; but the curtain is the picture. To know that God cannot be known is a large part of the knowledge of Him. Faith, built on experience, enters into the cloud, and is not afraid, but confidently tells what it knows to be within the darkness. "Righteousness and judgment"--the eternal principle and the activity thereof in the several acts of the King--are the bases of His throne, more solid than the covering cloud. Earth can rejoice in His reign, even though darkness may make parts of it painful riddles, if the assurance is held fast that absolute righteousness is at the centre, and that the solid core of all is judgment. Destructive power, symbolised in ver. 3 by fire which devours His adversaries, the fire which flashed first on Sinai, is part of the reason for the gladness of earth in His reign. For His foes are the world's foes too; and a God who could not smite into nothingness that which lifted itself against His dominion would be no God for whom the isles could wait. These three characteristics, mystery, righteousness, power to consume, attach to Jehovah's royalty, and should make every heart rejoice.
In the second strophe, the tenses suddenly change into pure narrative. The change may be simply due, as Cheyne suggests, to the influence of the earlier passages descriptive of theophanies, and in which the same tense occurs; but more probably it points to some event fresh in the experience of Israel, such as the return from Babylon. In this strophe again, we have mosaic. Ver. 4_a_ is quoted from Psalm lxxvii. 18. With ver. 4_b_ may be compared Psalm lxxvii. 16. Ver. 5_a_ is like Micah i. 4, and, in a less degree, Psalm lxviii. 2. "The Lord of the whole earth" is an unusual designation, first found in a significant connection in Josh. iii. 11, 13, as emphasising His triumph over heathen gods, in leading the people into Canaan, and afterwards found in Zech. iv. 14, vi. 5, and Micah iv. 13. Ver. 6_a_ comes from the theophany in Psalm l. 6; and ver. 6_b_ has parallels in both parts of Isaiah--_e.g._, Isa. xxxv. 2, xl. 5, lii. 10--passages which refer to the restoration from Babylon. The picture is grand as a piece of word-painting. The world lies wrapped in thunder-gloom, and is suddenly illumined by the fierce blaze of lightning. The awestruck silence of Nature is wonderfully given by ver. 4_b_: "The earth saw and trembled." But the picture is symbol, and the lightning-flash is meant to set forth the sudden, swift forth-darting of God's delivering power, which awes a gazing world, while the hills melting like wax from before His face solemnly proclaim how terrible its radiance is, and how easily the mere showing of Himself annihilates all high things that oppose themselves. Solid-seeming and august powers, which tower above His people's ability to overcome them, vanish when He looks out from the deep darkness. The end of His appearance and of the consequent removal of obstacles is the manifestation of His righteousness and glory. The heavens are the scene of the Divine appearance, though earth is the theatre of its working. They "declare His righteousness," not because, as in Psalm xix. they are said to tell forth His glory by their myriad lights, but because in them He has shone forth, in His great act of deliverance of His oppressed people. Israel receives the primary blessing, but is blessed, not for itself alone, but that all peoples may see in it Jehovah's glory. Thus once more the psalm recognises the world-wide destination of national mercies, and Israel's place in the Divine economy as being of universal significance.