The vestments controversy or vestarian controversy arose in the English Reformation, ostensibly concerning vestments or clerical dress. Initiated by John Hooper's rejection of clerical vestments in the Church of England under Edward VI as described by the 1549 Book of Common Prayer and 1550 ordinal, it was later revived under Elizabeth I. It revealed concerns within the Church of England over ecclesiastical identity, doctrine and church practices. Formulations The vestments controversy is also known as the vestiarian crisis or, especially in its Elizabethan manifestation, the edification crisis. The latter term arose from the debate over whether or not vestments, if they are deemed a "thing indifferent" (adiaphoron), should be tolerated if they are "edifying"—that is, beneficial. Their indifference and beneficial status were key points of disagreement. The term edification comes from 1 Corinthians 14:26, which reads in the 1535 Coverdale Bible: "How is it then brethren? Whan ye come together, euery one hath a psalme, hath doctryne, hath a tunge, hath a reuelacion, hath an interpretacion. Let all be done to edifyenge." As Norman Jones writes: In section 13 of the Act of Uniformity 1559, if acting on the advice of her commissioners for ecclesiastical causes or the metropolitan, the monarch had the authority "to ordeyne and publishe suche further Ceremonies or rites as maye bee most meet for the advancement of Goddes Glorye, the edifieing of his church and the due Reverance of Christes holye mistries and Sacramentes." During the reign of Edward VI John Hooper, having been exiled during King Henry's reign, returned to England in 1548 from the churches in Zürich that had been reformed by Zwingli and Bullinger in a highly iconoclastic fashion. Hooper became a leading Protestant reformer in England under the patronage of Edward Seymour, 1st Duke of Somerset and subsequently John Dudley, 1st Duke of Northumberland. Hooper's fortunes were unchanged when power shifted from Somerset to Northumberland, since Northumberland also favoured Hooper's reformist agenda. When Hooper was invited to give a series of Lenten sermons before the king in February 1550, he spoke against the 1549 ordinal whose oath mentioned "all saints" and required newly elected bishops and those attending the ordination ceremony to wear a cope and surplice. In Hooper's view, these requirements were vestiges of Judaism and Roman Catholicism, which had no biblical warrant for authentic Christians since they were not used in the early Christian church. Summoned to answer to