Christianity in the 14th century ever more complex and subtle in its distinctions and arguments. There was a rise to dominance of the nominalist or voluntarist theologies of men like William of Ockham. The 14th century was also a time in which movements of widely varying character worked for the reform of the institutional church, such as conciliarism, Lollardy and the Hussites. Spiritual movements such as the Devotio Moderna also flourished. Notable authors include: Under church tradition the practice of Hesychasm has it beginnings in the bible, Matthew 6:6 and the Philokalia. The tradition of contemplation with inner silence or tranquility is shared by all
Transubstantiation 14th-century reformers, John Wycliffe in particular. The manner in which the change occurs, the Roman Catholic Church teaches, is a mystery: "The signs of bread and wine become, in a way surpassing understanding, the Body and Blood of Christ." The precise terminology to be used to refer to the nature of the Eucharist and its theological implications has a contentious history, especially in the Protestant Reformation. In the Greek Orthodox Church, the doctrine has been discussed under the term of "metousiosis", coined as a direct loan-translation of "transsubstantiatio" in the 17th century. In Eastern Orthodoxy in general, the Sacred Mystery