10 Wherefore after the labour, and groaning, and very frequent showers of tears, since that cannot be ineffectual, which is asked so earnestly of Him, who is the Fountain of all mercies, and it is most truly said, “the Lord is near unto them that are of a broken heart:” after difficulties so great, the pious soul, by which we may also understand the Church, intimating that she has been heard, see what she adds: “Depart from me, all you that work iniquity; for the Lord has heard the voice of my weeping”. It is either spoken prophetically, since they will depart, that is, the ungodly will be separated from the righteous, when the day of judgment arrives, or, for this time present. For although both are equally found in the same assemblies, yet on the open floor the wheat is already separated from the chaff, though it be hid among the chaff. They can therefore be associated together, but cannot be carried away by the wind together.
11. “For the Lord has heard the voice of my weeping; The Lord has heard my supplication; the Lord has received my prayer”. The frequent repetition of the same sentiments shows not, so to say, the necessities of the narrator, but the warm feeling of his joy. For they that rejoice are wont so to speak, as that it is not enough for them to declare once for all the object of their joy. This is the fruit of that groaning in which there is labour, and those tears with which the couch is washed, and bed drenched: for, “he that sows in tears, shall reap in joy:” and, “blessed are they that mourn, for they shall be comforted.”
12. “Let all mine enemies be ashamed and vexed”. He said above, “depart from me all you:” which can take place, as it has been explained, even in this life: but as to what he says, “let them be ashamed and vexed,” I do not see how it can happen, save on that day when the rewards of the righteous and the punishments of the sinners shall be made manifest. For at present so far are the ungodly from being ashamed, that they do not cease to insult us. And for the most part their mockings are of such avail, that they make the weak to be ashamed of the name of Christ. Hence it is said, “Whosoever shall be ashamed of Me before men, of him will I be ashamed before My Father.” But now whosoever would fulfil those sublime commands, to disperse, to give to the poor, that his righteousness may endure for ever; and selling all his earthly goods, and spending them on the needy, would follow Christ, saying, “We brought nothing into this world, and truly we can carry nothing out; having food and raiment, let us be therewith content;” incurs the profane raillery of those men, and by those who will not be made whole, is called mad; and often to avoid being so called by desperate men, he fears to do, and puts off that, which the most faithful and powerful of all physicians has ordered. It is not then at present that these can be ashamed, by whom we have to wish that we be not made ashamed, and so be either called back from our proposed journey, or hindered, or delayed. But the time will come when they shall be ashamed, saying as it is written, “These are they whom we had sometimes in derision, and a parable of reproach: we fools counted their life madness, and their end to be without honour: how are they numbered among the children of God, and their lot is among the saints? Therefore have we erred from the way of truth, and the light of righteousness has not shined into us, nor the sun risen upon us: we have been filled with the way of wickedness and destruction, and have walked through rugged deserts, but the way of the Lord we have not known. What has pride profited us, or what has the vaunting of riches brought us? All those things are passed away like a shadow.”
Source: The Enarrations, or Expositions, on the Psalms (New Advent)