The eye is not single in its spiritual purpose. It is possible to retain privately those evil practices we have renounced in public. Evils are removed outwardly only to be cherished in the inner life. Religious revivals may appear very impressive without being thorough. Sin is concealed rather than destroyed.
Moral compromise tends to the concealment of sin.
God cannot be pleased with revivals that simply remove sin into a less conspicuous place, where it is made to lose half of its wickedness before God. Iniquity is iniquity to Him whether done in the public eye or indulged under the cover of situational pressures and a softened terminology. Often we deal softly with sinful habits, associations, pursuits, pleasures, which ought to be sacrificed forever. God will not be satisfied with less. Moses took the golden calf, burned it with fire, stamped upon it, ground it very small as dust, and then cast it into the river.