Vv. 30-33 paint the swift punishment of the people's unbelief, in language almost identical with Numb. xi. 33. The psalmist twice stigmatises their sin as "lust," and uses the word which enters into the tragical name given to the scene of the sin and the punishment—Kibroth-Hat taavah (the graves of Lust). In vv. 32, 33, the faint-hearted despondency after the return of the spies, and the punishment of it by the sentence of death on all that generation, seem to be alluded to.
The next group of four verses describes the people's superficial and transient repentance, "When He slew them they sought Him"—i.e., when the fiery serpents were sent among them. But such seeking after God, which is properly not seeking Him at all, but only seeking to escape from evil, neither goes deep nor lasts long. Thus the end of it was only lip reverence, proved to be false by life, and soon ended. "Their heart was not steadfast." The pressure being removed, they returned to their habitual position, as all such penitents do.
From the midst of this sad narrative of faithlessness, springs up, like a fountain in a weary land, or a flower among half-cooled lava blocks, the lovely description of God's forbearance in vv. 38, 39. It must not be read as if it merely carried on the narrative, and was in continuation of the preceding clauses. The psalmist does not say "He was full of compassion," though that would be much, in the circumstances; but he is declaring God's eternal character. His compassions are unfailing. It is always His wont to cover sin and to spare. Therefore He exercised these gracious forbearances towards those obstinate transgressors. He was true to His own compassion in remembering their mortality and feebleness. What a melancholy sound, as of wind blowing among forgotten graves, has that summing up of human life as "a breath that goes and comes not again"!
With ver. 40 the second portion of the psalm may be regarded as beginning. The first group of historical details dealt first with God's mercies, and passed on to man's requital. The second starts with man's ingratitude, which it paints in the darkest colours, as provoking Him, grieving Him, tempting Him, and vexing Him. The psalmist is not afraid to represent God as affected with such emotions by reason of men's indifference and unbelief. His language is not to be waved aside as anthropomorphic and antiquated. No doubt, we come nearer to the unattainable truth, when we conceive of God as grieved by men's sins and delighting in their trust, than when we think of Him as an impassive Infinitude, serenely indifferent to tortured or sinful hearts. For is not His name of names Love?
The psalmist traces Israel's sin to forgetfulness of God's mercy, and thus glides into a swift summing up of the plagues of Egypt, regarded as conducing to Israel's deliverance. They are not arranged chronologically, though the list begins with the first. Then follow three of those in which animals were the destroyers: namely, the fourth, that of flies; the second, that of frogs; and the eighth, that of locusts. Then comes the seventh, that of hail; and, according to some commentators, the fifth, that of the murrain, in ver. 49, followed by the tenth in ver. 51. But the grand, sombre imagery of ver. 49 is too majestic for such application. It rather sums up the whole series of plagues, likening them to an embassy (lit., a sending) of angels of evil. They are a grim company to come forth from His presence—Wrath, Indignation, and Trouble. The same power which sent them out on their errand prepared a way before them; and the crowning judgment, which, in the psalmist's view was also the crowning mercy, was the death of the first-born.
The next quartet of verses (vv. 52-55) passes lightly over the wilderness history and the settlement in the land, and hastens on to a renewed narration of repeated rebellion, which occupies the next group (vv. 56-59). These verses cover the period from the entrance on Canaan to the fall of the sanctuary of Shiloh, during which there was a continual tendency to relapse into idolatry. That is the special sin here charged against the Israel of the time of the Judges. The figure of a "deceitful bow," in ver. 57, well describes the people as failing to fulfil the purpose of their choice by God. As such a weapon does not shoot true, and makes the arrow fly wide, however well aimed and strongly drawn, so Israel foiled all Divine attempts, and failed to carry God's message to the world, or to fulfil His will in themselves. Hence the next verses tell, with intense energy and pathos, the sad story of Israel's humiliation under the Philistines. The language is extraordinarily strong in its description of God's loathing and rejection of the nation and sanctuary, and is instinct with sorrow, blended with stern recognition of His righteousness in judgment. What a tragic picture the psalmist draws! Shiloh, the dwelling-place of God, empty for evermore; the "Glory"—that is, the Ark—in the enemy's hands; everywhere stiffening corpses; a pall of silence over the land; no brides and no joyous bridal chaunts; the very priests massacred, unlamented by their widows, who had wept so many tears already that the fountain of them was dried up, and even sorrowing love was dumb with horror and despair!
The two last groups of verses paint God's great mercy in delivering the nation from such misery. The daring figure of His awaking as from sleep and dashing upon Israel's foes, who are also His, with a shout like that of a hero stimulated by wine, is more accordant with Eastern fervour than with our colder imagination; but it wonderfully expresses the sudden transition from a period, during which God seemed passive and careless of His people's wretchedness, to one in which His power flashed forth triumphant for their defence. The prose fact is the long series of victories over the Philistines and other oppressors, which culminated in the restoration of the Ark, the selection of Zion as its abode, which involved the rejection of Shiloh and consequently of Ephraim (in whose territory Shiloh was), and the accession of David. The Davidic kingdom is, in the psalmist's view, the final form of Israel's national existence; and the sanctuary, like the kingdom, is perpetual as the lofty heavens or the firm earth. Nor were his visions vain, for that kingdom subsists and will subsist for ever, and the true sanctuary, the dwelling-place of God among men, is still more closely intertwined with the kingdom and its King than the psalmist knew. The perpetual duration of both is, in truth, the greatest of God's mercies, outshining all earlier deliverances; and they who truly have become the subjects of the Christ, the King of Israel and of the world, and who dwell with God in His house, by dwelling with Jesus, will not rebel against Him any more, nor ever forget His wonders, but faithfully tell them to the generations to come.