John Foxe's "Acts and Monuments: Wycliffe, 3," 3ff.

1377. Richard II comes to the throne after the long, 51-year reign of Edward III, 3. Articles collected out of Wickliff's Sermons, 4. Articles collected out of Wickliff’s Sermons, to wit: (1) That the holy eucharist, after the consecration, is not the very body of Christ, but figuratively. (2) That the church of Rome is not the head of all churches more than any other church is; nor hath Peter any more power given him by Christ than any other apostle hath. (3) Item, That the pope of Rome hath no more part in the keys of the church, than hath any other within the order of priesthood. (4) Item, If God be, the lords temporal may lawfully and meritoriously take away their temporalties from the churchmen offending habitualiter. Item, If any temporal lord do know the church so offending, he is bound, under pain of damnation, to take the temporalties from the same. (5) Item, That the gospel is a rule sufficient of itself to rule the life of every Christian man here, without any other rule. (6) Item, That all other rules, under whose observances divers religious persons be governed, do add no more perfection to the gospel, than doth the white color to the wall. (7) Item, That neither the pope, nor any other prelate of the church, ought to have prisons wherein to punish transgressors. In 1378, a Bull of Pope Gregory XI is sent to the Chancellor and University of Oxford, essentially chastising the leaders for long-tolerating Wycliffe, 5. Also, an epistle of Pope Gregory XI is sent to King Richard of England, to persecute John Wickliff (7) with copies to Archbishop Arundel and Bishop Courtney of London to imprison Wycliffe.