“It was a reasonable demand,” says Dr. Barrow, “which was made to our Saviour: tell us by what authority thou doest these things, and who hath given thee this authority. The reasonableness of it our Lord did often avow, declaring, that if by his doctrine and works he had not vouched the divinity of his authority, it had been no sin to disbelieve or reject him.” (John v. 31, 36; x. 25, 37; and xv. 22, 24.) Dr. Barrow on Supremacy, p. 49.

This principle, which supposes in pastors the necessity of a lawful mission, was formerly, and may still be, triumphantly urged against Luther, Calvin, Tindal [Tyndale], Cranmer, and all the first pretended Reformers of the Catholic Church. For whence, said the Catholics, did these innovators derive their mission? Who sent them to preach? Who gave them authority to reform and alter the whole state of God’s Church? Let them shew their commission for this purpose, either ordinary or extraordinary. Unless they can do this, we have nothing to do with usurpers and intruders. ... If it be pretended that they had extraordinary mission, immediately derived from God, why did they not shew their credentials, stamped with the broad seal of heaven; that is, why did they not by clear and evident miracles, such as Christ and his apostles wrought, attest their being thus extraordinarily commissioned for the extraordinary work of the Reformation? Without such proofs as these, no pretensions to an extraordinary mission, in opposition to the ordinary Church authority, can be admitted. Otherwise every fanatic or enthusiast, following his own caprice, may pretend to a call from heaven; and, upon this foolish plea, preach up his own dreams for the pure word of God, in contempt of all authority, whether of Church or State. If it be said that the missions of the first reformers were ordinary, and derived to them by the ministry of men, it behoves them to point out what men these were from whom they received this ordinary power. Were they Catholics or Protestants? Not Protestants, for they cannot name any such who commissioned them to preach; not Catholics, because the religion which Luther and his reforming brethren endeavoured to propagate, was a new religion, directly opposite to that of Catholics, and therefore could not be taught, in virtue of any commission from Catholics. And how can they preach unless they be sent? (Romans x. 15.) If it be urged that Luther had received his orders in the Catholic Church, it is easily answered that this could not authorize him to commence preacher and teacher of another religion, any more than the orders which Mr. Whiston and Mr. Wesley might receive in the Protestant church of England could authorize them to teach a doctrine anathematized by that Church. (Rutter)