Wyclif, On Indulgences
In Wyclif's On Indulgences, he condemns the church practice of granting indulgences long before Luther posted his 95 Theses at Wittenberg. He closes the document by stating:
In such infinite blasphemies is the infatuated church involved, especially by the means of the tail of this dragon--that is, the sects of the friars, who labor in the cause of this illusion, and of other Luciferian seductions of the church. But arise, O soldiers of Christ! Be wise to fling away these things, along with the other fictions of the prince of darkness, and put ye on the Lord Jesus Christ, and confide, undoubtedly, in your own weapons, and sever from the church such frauds of Antichrist, and teach the people that in Christ alone and in his law, and in his members, they should trust; that in so doing, they may be saved through his goodness, and learn above all things honestly to detect the devices of Antichrist (270)!
Peters, Edward, Heresy and Authority in Medieval Europe. Phila.: U. Penn Press, 1980