For the oppression of the poor - That is, on account of the wrong done to the poor in the manner specified above - by the abuse of the power of speech. On account of the slanders uttered against them, or the frauds perpetrated on them by the abuse of this power. The reference is to the wrongs done when no confidence could be placed in men’s words; when they uttered words of “vanity” and “flattery” Psalms 12:2; when promises were made only to be broken, and obligations assumed never to be fulfilled. In such a state of things the “poor” were the most likely to suffer. In performing service for others - in daily labor on a farm or in a mechanical employment - they would depend for support, on the promises made by their employers; and when their pay was withheld, they and their families must suffer. Compare James 5:4. Rich men, having other resources, would not thus suffer; but the poor must always suffer when there is in the community a disregard of the obligation of promises. In like manner, the poor would be most likely to “be taken in by the acts of unprincipled men, and to be deceived in their small dealings with them. Other classes of the community would be on their guard; but the poor, unacquainted with the arts of cunning men, are always liable - though on a small scale, yet of importance to them - to be wronged by the false statements and promises of those against whom they can have no redress.
For the sighing of the needy ... - The word “needy” here is synonymous with “poor.” It refers to those in humble circumstances, who were especially liable to be wronged by deceitful statements and promises.
I will set him in safety - I will make him safe. I will save him from the evils which they thought to bring upon him. The general idea is, that God is the vindicator of the poor and the oppressed.
From him that puffeth at him - Prof. Alexander renders this, “I will place in safety him that shall pant for it.” Gesenius renders it, “whom they puffed at; that is, the oppressed.” The language in the original is difficult. It may mean either “he pants for it,” or “he puffs at him;” and the meaning can only be determined by the connection. That would rather seem to be what is indicated in our common version; to wit, that the persons referred to as oppressing the poor and needy, “puffed” at them; that is, they looked upon them with contempt, and felt that with a puff of their breath they could blow them away. They regarded them as insignificant and worthless. By this construction, also, the connection with the main statement will be best preserved - that the injury referred to in the psalm was done by “words,” by the breath of the mouth - thus indicating that by a “word” or a “breath” they could destroy them.