Continued in the thirty-seventh chapter, the description appears to be from what is actually going on, a tremendous thunderstorm that shakes the earth. The sound comes, as it were, out of the mouth of God, reverberating from sky to earth and from earth to sky, and rolling away under the whole heaven. Again there are lightnings, and "_He stayeth them not when His voice is heard._" Swift ministers of judgment and death they are darted upon the world. We are asked to consider a fresh wonder, that of the snow which at certain times replaces the gentle or copious rain. The cold fierce showers of winter arrest the labour of man, and even the wild beasts seek their dens and abide in their lurking-places. "The Angel of the Sea," says Mr. Ruskin, "has also another message,--in the 'great rain of His strength,' rain of trial, sweeping away ill-set foundations. Then his robe is not spread softly over the whole heaven as a veil, but sweeps back from his shoulders, ponderous, oblique, terrible--leaving his sword-arm free." God is still directly at work. "_Out of His chamber cometh the storm and cold out of the north._" His breath gives the frost and straitens the breadth of waters. Towards Armenia, perhaps, the poet has seen the rivers and lakes frozen from bank to bank. Our science explains the result of diminished temperature; we know under what conditions hoar-frost is deposited and how hail is formed. Yet all we can say is that thus and thus the forces act. Beyond that we remain like this writer, awed in presence of a heavenly Will which determines the course and appoints the marvels of nature. "_By the breath of God ice is given, And the breadth of the waters is straitened. Also He ladeth the thick cloud with moisture, He spreadeth His lightning cloud abroad; And it is turned about by His guidance, That it may do whatsoever He commandeth Upon the face of the whole earth._" Here, again, moral purpose is found. The poet attributes to others his own susceptibility. Men see and learn and tremble. It is for correction, that the careless may be brought to think of God's greatness, and the evil-doers of His power, that sinners being made afraid may turn from their rebellion. Or, it is for His earth, that rain may beautify it and fill the rivers and springs at which the beasts of the valley drink. Or, yet again, the purpose is mercy. Even the tremendous thunderstorm may be fraught with mercy to men. From the burning heat, oppressive, intolerable, the rains that follow bring deliverance. Men are fainting for thirst, the fields are languishing. In compassion God sends His great cloud on its mission of life. More delicate, needing finer observation, are the next objects of study. "_Dost thou know how God layeth His charge on them, And causeth the light of His cloud to shine? Dost thou know the balancings of the clouds, The wondrous works of Him who is perfect in knowledge?_"