This psalm was penned at a time then the church of God was brought low and trampled upon; some think it was when the Jews were captives in Babylon, though that was not the only time that they were insulted over by the proud. The psalmist begins as if he spoke for himself only (Psa 123:1), but presently speaks in the name of the church. Here is, I. Their expectation of mercy from God (Psa 123:1, Psa 123:2). II. Their plea for mercy with God, (Psa 123:3, Psa 123:4). In singing it we must have our eye up to God's favour with a holy concern, and then an eye down to men's reproach with a holy contempt. A song of degrees.