4 Let whatsoever holy men therefore that are suffering pressing from those that have been put afar off from the saints, give heed to this Psalm, let them perceive here themselves, let them speak what here is spoken, that suffer what here is spoken of....Private enmities therefore let no one think of, when about to hear the words of this Psalm: “Know ye that for us the wrestling is not against flesh and blood, but against princes and powers, and spiritual things of wickedness,” that is, against the devil and his angels; because even when we suffer men that annoy us, he is instigating, he is inflaming, as it were his vessels he is moving.
Let us give heed therefore to two enemies, him whom we see, and him whom we see not; man we see, the devil we see not; man let us love, of the devil beware; for man pray, against the devil pray, and let us say to God, “Have pity on me, O Lord, for man has trodden me down”. Fear not because man has trodden you down: have thou wine, a grape you have become in order that you should be trodden. “All day long warring he has troubled me,” every one that has been put afar off from the saints.
But why should not here be understood even the devil himself? Is it because mention is made of “man”? does therefore the Gospel err, because it has said, “A man that is an enemy has done this”? But by a kind of figure may he also be called a man, and yet not be a man. Whether therefore it was him whom he that said these words was beholding, or whether it was the people and each one that was put afar off from holy men, through which kind the devil troubles the people of God, who cleave to holy men, who cleave to the Holy One, who cleave to the King, at the title of which King being indignant they were as though beaten back, and put afar off: let him say, “Have pity on me, O Lord, for man has trodden me down:” and let him faint not in this treading down, knowing Him on whom he is calling, and by whose example he has been made strong.
The first cluster in the winefat pressed is Christ. When that cluster by passion was pressed out, there flowed that whence “the cup inebriating is how passing beautiful!” Let His Body likewise say, looking upon its Head, “Have pity on me, O Lord, for man has trodden me down: all day long warring he has troubled me.” “All day long,” at all times. Let no one say to himself, There have been troubles in our fathers' time, in our time there are not. If you suppose yourself not to have troubles, not yet have you begun to be a Christian.
And where is the voice of the Apostle, “But even all that will live godly in Christ, persecutions shall suffer.” If therefore you suffer not any persecution for Christ, take heed lest not yet you have begun godly to live in Christ. But when you have begun godly to live in Christ, you have entered into the winepress; make ready yourself for pressings: but be not thou dry, lest from the pressing nothing go forth.
Source: The Enarrations, or Expositions, on the Psalms (New Advent)