The prayer for destruction is caught up again in ver. 8, in two daring figures which tremble on the verge of lowering the key of the whole; but by escaping that peril, produce the contrary effect, and heighten it. A slug leaves a shining track of slime as it creeps, which exudes from its soft body, and thus it seems to disintegrate itself by its own motion. It is the same thought of the suicidal character of bad men's efforts which was expressed by the stream foaming itself away in the nullah. It is the eternal truth that opposition to God's will destroys itself by its own activity. The unfulfilled life of a premature birth, with eyes which never opened to the light for which they were made, and possibilities which never unfolded, and which is huddled away into a nameless grave, still more impressively symbolises futility and transiency.
In ver. 9 the figure has given much trouble to commentators. Its broad meaning is, however, undoubted. It is, as ver. 6 and ver. 7 _b_, symbolic of the Divine intervention which wrecks wicked men's plans before they are wrought out. The picture before the psalmist seems to be that of a company of travellers round their camp fire, preparing their meal. They heap brushwood under the pot, and expect to satisfy their hunger; but before the pot is warmed through, not to say before the water boils or the meat is cooked, down comes a whirlwind, which sweeps away fire, pot, and all. Every word of the clause is doubtful, and, with the existing text, the best that can be done is not wholly satisfactory. If emendation is resorted to, the suggestion of Bickell, adopted by Cheyne, gives a good sense: "[And] while your [flesh] is yet raw, the hot wrath [of Jehovah] shall sweep it away." Baethgen makes a slighter alteration, and renders, "While it is still raw, He sweeps it away in wrath." Retaining the existing text (which is witnessed by the LXX. and other old versions), probably the best rendering is, "Whether [it be] green or burning, He shall whirl it away." This general understanding of the words is shared by commentators who differ as to what is represented as swept away,--some making it the thorn fire, the twigs of which may be either full of sap or well alight; while others take the reference to be to the meat in the pot, which may be either "living," _i.e._ raw, or well on the way to being cooked. Neither application is quite free from difficulty, especially in view of the fact that some pressure has to be put on the word rendered "burning," which is not an adjective, but a noun, and is usually employed to designate the fiery wrath of God, as it is rendered in the amended text just mentioned. After all attempts at clearing up the verse, one must be content to put a mark of interrogation at any rendering. But the scope of the figure seems discoverable through the obscurity. It is a homely and therefore vigorous picture of half-accomplished plans suddenly reduced to utter failure, and leaving their concocters hungry for the satisfaction which seemed so near. The cookery may go on merrily and the thorns crackle cheerily, but the simoom comes, topples over the tripod on which the pot swung, and blows the fire away in a hundred directions. Peter's gibbet was ready, and the morning of his execution was near; but when day dawned, "there was no small stir what was become of him." The wind had blown him away from the expectation of the people of the Jews into safe quarters; and the fire was dispersed.
The closing part (vv. 10, 11) breathes a stern spirit of joy over the destruction of the wicked. That is a terrible picture of the righteous bathing his feet in the blood of the wicked (Psalm lxviii. 23). It expresses not only the dreadful abundance of blood, but also the satisfaction of the "righteous" at its being shed. There is an ignoble and there is a noble and Christian satisfaction in even the destructive providences of God. It is not only permissible but imperative on those who would live in sympathy with His righteous dealings and with Himself, that they should see in these the manifestation of eternal justice, and should consider that they roll away burdens from earth and bring hope and rest to the victims of oppression. It is no unworthy shout of personal vengeance, nor of unfeeling triumph, that is lifted up from a relieved world when Babylon falls. If it is right in God to destroy, it cannot be wrong in His servants to rejoice that He does. Only they have to take heed that their emotion is untarnished by selfish gratulation, and is not untinged with solemn pity for those who were indeed doers of evil, but were themselves the greatest sufferers from their evil. It is hard, but not impossible, to take all that is expressed in the psalm, and to soften it by some effluence from the spirit of Him who wept over Jerusalem, and yet pronounced its doom.