This superb hymn is unsurpassed, if not unequalled, in grandeur, lyric fire, and sustained rush of triumphant praise. It celebrates a victory; but it is the victory of the God who enters as a conqueror into His sanctuary. To that entrance (vv. 15-18) all the preceding part of the psalm leads up; and from it all the subsequent part flows down. The Exodus is recalled as the progress of a king at the head of his hosts, and old pæans re-echo. That dwelling of God in the sanctuary is "for ever." Therefore in the second part of the psalm (vv. 19-35) its consequences for the psalmist's generation and for the future are developed--Israel's deliverance, the conquest of the nations, and finally the universal recognition of God's sovereignty and ringing songs sent up to Him.
The Davidic authorship is set aside as impossible by most recent commentators, and there is much in the psalm which goes against it; but, on the other hand, the Syro-Ammonite war (2 Sam. xi.), in which the ark was taken into the field, is not unnaturally supposed by Delitzsch and others to explain the special reference to the entrance of God into the sanctuary. The numerous quotations and allusions are urged as evidence of late date, especially the undeniable resemblance with Isaiah II. But the difficulty of settling which of two similar passages is original and which copy is great; and if by one critical canon such allusions are marks of lateness, by another, rugged obscurities, such as those with which this psalm bristles, are evidences of an early date.
The mention of only four tribes in ver. 27 is claimed as showing that the psalm was written when Judæa and Galilee were the only orthodox districts, and central Palestine was in the hands of the Samaritans. But could there be any talk of "princes of Zebulun and Naphtali" then? The exultant tone of the psalm makes its ascription to such a date as the age of the Ptolemies unlikely, when "Israel is too feeble, too depressed, to dream of self-defence; and, if God does not soon interpose, will be torn to pieces" (Cheyne, "Aids to the Devout Study," etc., 335).
To the present writer it does not appear that the understanding and enjoyment of this grand psalm depend so much on success in dating it as is supposed. It may be post-exilic. Whoever fused its reminiscences of ancient triumph into such a glowing outburst of exultant faith, his vision of the throned God and his conviction that ancient facts reveal eternal truths remain for all generations as an encouragement of trust and a prophecy of God's universal dominion.
The main division at ver. 18 parts the psalm into two equal halves, which are again easily subdivided into strophes.
The first strophe (vv. 1-6) may be regarded as introductory to the chief theme of the first half--namely, the triumphant march of the conquering God to His sanctuary. It consists of invocation to Him to arise, and of summons to His people to prepare His way and to meet Him with ringing gladness. The ground of both invocation and summons is laid in an expansion of the meaning of His name as Helper of the helpless, Deliverer of the captive, righteous, and plentifully rewarding the proud doer. The invocation echoes the Mosaic prayer "when the ark set forward" (Numb. x. 35), with the alteration of the tense of the verb from a simple imperative into a precative future, and of "Jehovah" into God. This is the first of the quotations characteristic of the psalm, which is penetrated throughout with the idea that the deeds of the past are revelations of permanent relations and activities. The ancient history glows with present life. Whatever God has done He is doing still. No age of the Church needs to look back wistfully to any former, and say, "Where be all His wondrous works which our fathers have told us of?" The twofold conditions of God's intervention are, as this strophe teaches, Israel's cry to Him to arise, and expectant diligence in preparing His way. The invocation, which is half of Israel's means of insuring His coming, being a quotation, the summons to perform the other half is naturally regarded by the defenders of the post-exilic authorship as borrowed from Isaiah II. (_e.g._, xl. 3, lvii. 14, lxii. 10), while the supporters of an earlier date regard the psalm as the primary passage from which the prophet has drawn.