Isaiah 64:6

But we are all as an unclean thing
Or "we have been" ^F20; so all men are in a state of nature: man was made pure and holy, but by sinning became impure; and this impurity is propagated by natural generation, and belongs to all, none are free from it; and there is no cleansing from it but by the grace of God and blood of Christ: all are not sensible of it; some are, as the church here was, and owns it, and the universality of it, and compares herself and members to an "unclean thing", on account of it; so men, defiled with sin, are compared to unclean creatures, dogs, and swine, and to unclean persons; to such as are covered with loathsome diseases, and particularly to leprous persons, and who may be chiefly intended here; they being defiled and defiling, loathsome and abominable, their disease spreading and continuing, and incurable by physicians; hence they were separated from the company of men; and the words may be rendered, "as an unclean person" ^F21, as such were by the law: or we are, in our own sense and apprehension of things; and this may respect not only the impurity of nature, but a general corruption in doctrine and manners among the professors of religion; such as was in the Jewish church about the time of Christ's coming. And all our righteousnesses are as filthy rags;
which is to be understood not of the righteousness of some persons in the church, which lay in outward rites, ceremonies, and sacrifices, which were no righteousness before God, and could not take away sin; and were indeed on many accounts, as they were performed, loathsome and abominable; see ( Isaiah 1:11-14 ) , or of others that lay in outward legal duties and works of the law, which were not done from right principles, as well as not perfect; and so, because of the impurity, imperfection, pride, and vanity, that appeared in them, were abominable to the Lord: but of the righteousnesses of the church herself; not of the righteousness of Christ, which was made hers by imputation; for this is not rags, but a robe, the best robe, and wedding garment; much less filthy, but pure and spotless, beautiful and glorious, as well as a proper covering; but then, though this is the church's, and all true believers', by gift, by imputation and application, yet its is properly Christ's and is in him, and is opposed to their own righteousness; which is what is intended here, even the best of it; such works of righteousness as are done by them in the best manner; they are "rags", not whole, but imperfect, not fit to appear in before God, and by which they cannot be justified in his sight; they are "filthy" ones, being attended with imperfection and sin; and these conversation garments need continual washing in the blood of Jesus; this is the language not of a natural man, or of a Pharisee, but of a sensible sinner, a truly gracious soul. The words may be rendered, "as a menstruous cloth" ^F23, as some; or "as a garment of spoil or prey" ^F24, as Aben Ezra, rolled in blood, either in war, or by a beast of prey; or as a foul plaster or cloth taken off a sore, with purulent matter on it ^F25, as others; or any other impure and nauseous thing. Hottinger ^F26 thinks the word has some affinity with the Arabic (dde) , which signifies "running water", such as the water of a fountain or well; so that the sense may be, that the church's righteousness was like a cloth, so polluted and spotted that it could not be washed out clean but with clear and running water; and, in every sense in which it may be taken, it serves to set forth the impurity and imperfection of the best righteousness of men, and to show that their works are not the cause of salvation, the church had an assurance of in the preceding verse: and we all do fade as a leaf;
or "fall" ^F1 as one; as leaves in autumn: this is to be understood of a great part, and perhaps of the greater part, of the visible members of the church; not of true believers and real members, for these are rooted in the love of God, and in Christ, and have the root of the matter in them, the true grace of God; and therefore, though they meet with many blustering storms, yet do not cast their leaf of profession; indeed there may be, as there often are, decays and declensions in them; but rather this is to be interpreted of carnal professors, with which, at this time, the church abounded, who had no true grace in them; and so dropped their profession, and became like trees whose fruit withered, were without fruit; or like trees, in the fall of the year, which are without fruit, and shed their leaves, ( Jude 1:12 ) : and our iniquities, like the wind, have taken us away;
as a leaf falling from the tree is carried away with the wind, which it is not able to withstand; so formal and carnal professors are carried away, through their sins, with the wind of persecution, and apostatize: or rather for their sins the Jews were carried captive, as before, to Babylon; so now by the Romans into various countries, where they are dispersed at this day; to which this passage may have some respect. "Iniquities" are put for the punishment of them; so the Targum,

``and, because of our sins, as the wind we are taken away.''