He turneth rivers into a wilderness Here then is an account of changes which it would be the height of folly to attribute to chance. Fruitful lands become unfruitful, and barren lands assume the new aspect of freshness and fruitfulness. And how happens it that one district becomes sterile, and another becomes fat and fertile, contrary to what they were wont to be, but because that God pours out his wrath upon the inhabitants of the one, by taking his blessing from them, and renders the other fruitful to feed the hungry? It may be ascribed to the thinness of the population, that many parts of Asia and Greece, once exceedingly fruitful, now lie uncultivated and unproductive; but we must ascribe to the providence of God, which the prophet praises, the well authenticated fact, that in some places the earth that was fruitful has now become barren and parched, while others are beginning to be fertile. It is, however, not sufficient merely to observe, that these wonderful revolutions of the surface of the earth are the result of God's overruling purpose, unless we also observe, in the second place, what the prophet does not omit, that the earth is cursed by him on account of the iniquity of its inhabitants, who prove themselves to be undeserving of being so amply sustained by his bountiful hand. He has put pools and springs of water for fields or countries where there is an abundance of water; because moisture is required to nourish the plants by which fruit is produced. The term saltness is employed metaphorically, inasmuch as there is nothing more sterile than salt; hence that saying of Christ's, "If the salt have lost its saltness, what further purpose will it serve?" Mark 9:50 not even indeed for barrenness. And, consequently, when men designed to doom any place to remain unproductive, they usually sowed it with salt. And probably it is in allusion to this ancient custom, that the prophet says that the land was covered with salt.

He turneth rivers into a wilderness - He makes great changes in the earth; he shows that he has absolute dominion over it. See the notes at Isaiah 44:26-27. On the word "wilderness," see the notes at Psalm 107:4. The point here is, that God had such control over nature that he could make the bed of a river dry and barren as the rocky or sandy desert. He could effectually dry up the stream, and make it so dry and parched that nothing would grow but the most stunted shrubs, such as were found in the waste and sandy desert.
And the water-springs into dry ground - The very fountains of the rivers: not only drying up the river itself by leading it off into burning wastes where it would be evaporated by the heat, or lost in the sand - but so directly affecting the "sources" of the streams as to make them dry.

He turneth rivers into a wilderness - After having, as above, illustrated the state of the Jews in their captivity, and the deliverance which God wrought for them, he now turns to the general conduct of God in reference to the poor and needy; and his gracious Interpositions in their behalf, the providential supply of their wants, and his opposition to their oppressors. On account of the wickedness of men, he sometimes changes a fruitful land into a desert. See the general state of Egypt in the present time: once a fertile land; now an arid, sandy wilderness. Again, by his blessing on honest industry, he has changed deserts into highly fertile ground. And, as for the wickedness of their inhabitants, many lands are cursed and rendered barren; so, when a people acknowledge him in all their ways, he blesses their toil, gives them rain and fruitful seasons, and fills their hearts with joy and gladness.

He turneth rivers into a wilderness,.... A country abounding with rivers, as the country round about Sodom and the land of Canaan were, Genesis 13:10. Such an one is sometimes, by the just judgment of God, turned into a desert.
And the water springs into dry ground: what was like a well watered garden becomes like dry and barren earth, on which nothing grows.

What surprising changes are often made in the affairs of men! Let the present desolate state of Judea, and of other countries, explain this. If we look abroad in the world, we see many greatly increase, whose beginning was small. We see many who have thus suddenly risen, as suddenly brought to nothing. Worldly wealth is uncertain; often those who are filled with it, ere they are aware, lose it again. God has many ways of making men poor. The righteous shall rejoice. It shall fully convince all those who deny the Divine Providence. When sinners see how justly God takes away the gifts they have abused, they will not have a word to say. It is of great use to us to be fully assured of God's goodness, and duly affected with it. It is our wisdom to mind our duty, and to refer our comfort to him. A truly wise person will treasure in his heart this delightful psalm. From it, he will fully understand the weakness and wretchedness of man, and the power and loving-kindness of God, not for our merit, but for his mercy's sake.

He turneth rivers into a wilderness, &c.--God's providence is illustriously displayed in His influence on two great elements of human prosperity, the earth's productiveness and the powers of government. He punishes the wicked by destroying the sources of fertility, or, in mercy, gives fruitfulness to deserts, which become the homes of a busy and successful agricultural population. By a permitted misrule and tyranny, this scene of prosperity is changed to one of adversity. He rules rulers, setting up one and putting down another.

Since in Psalm 107:36 the historical narration is still continued, a meaning relating to the contemporaneous past is also retrospectively given to the two correlative ישׂם. It now goes on to tell what those who have now returned have observed and experienced in their own case. Psalm 107:33 sounds like Isaiah 50:2; Psalm 107:33 like Isaiah 35:7; and Psalm 107:35 takes its rise from Isaiah 41:18. The juxtaposition of מוצאי and צמּאון, since Deuteronomy 8:15, belongs to the favourite antithetical alliterations, e.g., Isaiah 61:3. מלחה, that which is salty (lxx cf. Sir. 39:23: ἅλμη), is, as in Job 39:6, the name for the uncultivated, barren steppe. A land that has been laid waste for the punishment of its inhabitants has very often been changed into flourishing fruitful fields under the hands of a poor and grateful generation; and very often a land that has hitherto lain uncultivated and to all appearance absolutely unprofitable has developed an unexpected fertility. The exiles to whom Jeremiah writes, Psalm 29:5 : Build ye houses and settle down, and plant gardens and eat their fruit, may frequently have experienced this divine blessing. Their industry and their knowledge also did their part, but looked at in a right light, it was not their own work but God's work that their settlement prospered, and that they continually spread themselves wider and possessed a not small, i.e., (cf. 2-Kings 4:3) a very large, stock of cattle.

Rivers - Those grounds which are well watered, and therefore fruitful. And so the water - springs, here, and the standing water, Psalm 107:35 are taken. Into - Into a dry ground, which is like a parched and barren wilderness.