Oh that men would praise the Lord for his goodness - More literally, "Let such - or, let these - praise the Lord for his goodness," the word "men" having been supplied by our translators. Yet it is not improper to suppose that a wider range is intended than would be denoted if it were confined to those who had then been delivered. It was evidently designed to impress the minds of those who might use this psalm in their devotions; and the idea is, that the deliverance then vouchsafed to the people of God in their troubles should lead all to praise and adore him. Such a surprising interposition suggested an important lesson in regard to God, applicable to all people; and should lead all to praise him in view of the trait of character thus manifested, as that of a God who hears prayer when his people are in trouble, and who can make a straight path before them when they are in danger of being lost, and who can conduct them through the wilderness - the waste places - of this world, as he did his people across the pathless sands of the desert. The true use of all history is to teach us lessons about God.
And for his wonderful works to the children of men - His doings as suited to excite wonder and admiration. His dealings with his people in the desert furnished one illustration of this; the world is full of such illustrations. The desire expressed in this verse suggests the great lesson of the psalm.

O that men would praise the Lord - This is what is called the intercalary verse, or burden of each part of this responsive song: see the introduction. God should be praised because he is good. We naturally speak highly of those who are eminent. God is infinitely excellent, and should be celebrated for his perfections. But he does wonders for the children of men; and, therefore, men should praise the Lord. And he is the more to be praised, because these wonders, נפלאות niphlaoth, miracles of mercy and grace, are done for the undeserving. They are done לבני אדם libney adam, for the children of Adam, the corrupt descendants of a rebel father.

O that men would praise the Lord for his goodness,.... For his providential goodness, in providing food and drink for them, when fainting; in directing them to their right way, when they had lost it; and in bringing them safe to the place they were bound for: and particularly for his special grace and goodness, in redemption and effectual calling; for bringing out of a wilderness state and condition, and supplying them with all spiritual provisions, and putting them in the right way to eternal glory and happiness.
And for his wonderful works to the children of men! as all the above things are wonderful ones, both in providence and grace. This verse is repeated at the close of each of the instances produced; in which the goodness of God appears to persons in distress, and who being delivered, ought to acknowledge it, and be thankful for it: or "confess": that is, declare to God his goodness, and to the children of men his wonderful works; so the Targum.

To the chorus is added, as a reason for praise, an example of the extreme distress from which they had been delivered--extreme hunger, the severest privation of a journey in the desert.