All these wait upon thee The prophet here again describes God as acting the part of the master of a household, and a foster-father towards all sorts of living creatures, by providing liberally for them. He had said before, that God made food to grow on the mountains for the support of cattle, and that sustenance is ministered to the very lions by the hand of the same God, although they live upon prey. Now he amplifies this wonder of the divine beneficence by an additional circumstance. While the different species of living creatures are almost innumerable, and the number in each species is so great, there is yet not one of them which does not stand in need of daily food. The meaning then of the expression, All things wait upon thee, is, that they could not continue in existence even for a few days, unless God were to supply their daily need, and to nourish each of them in particular. We thus see why there is so great a diversity of fruits; for God assigns and appoints to each species of living creatures the food suitable and proper for them. The brute beasts are not indeed endued with reason and judgment to seek the supply of their wants from God, but stooping towards the earth, they seek to fill themselves with food; still the prophet speaks with propriety, when he represents them as waiting upon God; for their hunger must be relieved by his bounty, else they would soon die. Nor is the specification of the season when God furnishes them with food superfluous, since God lays up in store for them, that they may have the means of sustenance during the whole course of the year. As the earth in winter shuts up her bowels, what would become of them if he did not provide them with food for a long time? The miracle, then, is the greater from the circumstance, that God, by making the earth fruitful at stated seasons, extends in this way his blessing to the rest of the year which threatens us with hunger and famine. How wretched would we be when the earth in winter shuts up her riches, were not our hearts cheered with the hope of a new increase? In this sense, the Psalmist appropriately affirms, that God opens his hand If wheat should grow up daily, God's providence would not be so manifest. But when the earth becomes barren, it is as if God shut his hand. Whence it follows, that when he makes it fruitful, he, so to speak, stretches out his hand from heaven to give us food. Now if he supply wild and brute beasts with sustenance in due season, by which they are fed to the full, his blessing will doubtless be to us as an inexhaustible source of plenty, provided we ourselves do not hinder it from flowing to us by our unbelief.

These wait all upon thee - That is, These are all dependent on thee. It does not, of course, mean that they "wait" in the sense that they are conscious of their dependence on God, but that they are "actually" dependent. The original word implies the idea of "expecting" or "hoping," and is so rendered in the Septuagint and Vulgate. They have no other ground of expectation or hope but in thee.
That thou mayest give them their meat in due season - Their food at the proper time. That is, They are constantly dependent on thee, that thou mayest give them food from day to day. Perhaps there is also the idea that they do not lay up or hoard anything; or that they cannot anticipate their own needs, but must receive from one day to another all that they want directly from God.

These wait all upon thee - The innumerable fry of the smaller aquatic animals, as well as whales, dolphins, porpoises, and sharks, all have their meat from God. He has in his gracious providence furnished that sort of food which is suitable to all. And this provision is various; not only for every kind of fish does God provide food, but a different kind of aliment for each in its different periods of growth. Here are displayed the goodness and infinitely varied providence of God: "He giveth them their meat in due season."

(o) These wait all upon thee; that thou mayest give [them] their meat in due season.
(o) God is a nourishing father, who provides for all creatures their daily foods.

These wait all upon thee,.... Or "hope in thee" (s); not only the fishes of the sea, but the beasts of the field; for to them the psalmist returns, as Aben Ezra observes; to whom hope and expectation of their food and waiting for it at the hands of God, are ascribed; the allusion seems to be to tame creatures, who come at their certain times and wait on them that have been used to give them their food; and it may instruct us to wait on the Lord, as for our daily bread, so for our spiritual food, in prayer, and in public ordinances, where and from whom we may hope and expect to have it.
That thou mayest give them their meat in due season; or "in his time" (t); everyone in its own time, which is natural to them, and they have been used to; at which time the Lord gives it to them and they take it; it would be well if men would do so likewise, eat and drink in proper and due time, Ecclesiastes 10:17. Christ speaks a word in season to weary souls; his ministers give to everyone their portion of meat in due season; and a word spoken in due season, how good and sweet is it? Isaiah 1:4.
(s) "sperant", Pagninus, Cocceius, Michaelis; "sperabunt", Montanus. (t) "in tempore suo", Pagninus, Montanus, Tigurine version, Junius & Tremellius, Piscator, &c.

The entire dependence of this immense family on God is set forth. With Him, to kill or make alive is equally easy. To hide His face is to withdraw favor (Psalm 13:1). By His spirit, or breath, or mere word, He gives life. It is His constant providence which repairs the wastes of time and disease.