Psalms 73:2

But what to you? "But my feet were almost moved" [Psalm 73:2]. When were the feet moved, except when the heart was not right? Whence was the heart not right? Hear: "My steps were well near overthrown." What he has meant by "almost," the same he has meant by "well near:" and what he has meant by "my feet were almost moved," the same he has meant by "my steps were overthrown." Almost my feet were moved, almost my steps were overthrown. Moved were the feet: but whence were the feet moved and the steps overthrown? Moved were the feet to going astray, overthrown were the steps to falling: not entirely, but "almost." But what is this? Already I was going to stray, I had not gone: already I was falling, I had not fallen.

Indeed, in what follows, David describes his own experience when he says, "But my feet were almost moved, my steps had well nigh slipped, for I was envious in the case of sinners, when I saw the peace of sinners." He is surely not speaking of bodily feet and bodily steps but of the uprightness of the heart and of the step concerning which he says in another passage, "Let not the foot of pride come to me and let not the hand of sinners move me." And so, we ought always to ask that the Lord may direct the footsteps of our spirits. Else they may fall, slip in a kind of morass of error and be unable to maintain their firm hold. Moreover, the reason for David's fall is that he emulated the peace of sinners. But we ought to emulate what is good, not what is filled with shame, even as the apostle Paul also put it when he said, "to emulate the good is always a good thing."

Although the hearts of all the faithful do not doubt that divine providence is never absent in any part of the world or at any time or that success in temporal affairs does not rest on the power of the stars (which is no power) but it acknowledges that all things are disposed according to the most just and most kind decision of the King on High, as it is written: "All the paths of the Lord are mercy and truth." Still, since some things do not happen according to our desires, and since the cause of the wicked is often favored over that of the righteous in the mistakes of human justice, it is a fact very near to us and well known that these things trouble even great souls and drive them to some complaint of an unlawful matter. Even David, most renowned of prophets, confessed himself distressed by these diversities to the point of danger and said, "My feet were almost stumbling, my steps were all but slipping, because I was envious of the arrogant, seeing the prosperity of the sinners."