Behold

  Most Diligent

 "Now I would ask a strange question," said Latimer. "Who is the most diligent bishop and prelate in all England? . . . I see you listening and hearkening that I should name him. . . . I will tell you: it is the devil. . . . He is never out of his diocese; call for him when you will, he is ever at home; . . . he is ever at his plow. . . . Ye shall never find him idle, I warrant you. . . . Where the devil is resident, . . . there away with books, and up with candles; away with Bibles, and up with beads; away with the light of the gospel, and up with the light of candles, yea, at noondays; . . . down with Christ's cross, up with purgatory pickpurse; . . . away with clothing the naked, the poor, and impotent, up with decking of images and gay garnishing of stocks and stones; up with man's traditions and his laws, down with God's traditions and His most Holy Word. . . . O that our prelates would be as diligent to sow the corn of good doctrine, as Satan is to sow cockle and darnel!"--Ibid., "Sermon of the Plough."  GC 248

Sometimes the devils come looking so beautiful as an angel of light.