There are two sorts of hypocrites: ones that are deceived with their outward morality and external religion; and the others are those that are deceived with false discoveries and elevation; which often cry down works, and men's own righteousness, and tlak much of free grace, but at the same time make a righteousness of their discoveries and of their humiliation, and exalt themselves to heaven with them.
Jonathan EdwardsThe deceitfulness of the heart of man appears in no one thing so much as this of spiritual pride and self-righteousness. The subtlety of Satan appears in its height, in his managing persons with respect to this sin. And perhaps one reason may be that here he has most experience; he knows the way of its coming in; he is acquainted with the secret springs of it: it was his own sin. Experience gives vast advantage in leading souls, either in good or evil.
Jonathan Edwards