What is the Arian Controversy?The Arian controversy was a series of Christian theological disputes that arose between Arius and Athanasius of Alexandria, two Christian theologians from Alexandria, Egypt. The most important of these controversies concerned the substantial relationship between God the Father and God the Son. The deep divisions created by the disputes were an ironic consequence of Emperor Constantine's efforts to unite Christianity and establish a single, imperially approved version of the faith during his reign. These disagreements divided the Church into two opposing theological factions for over 55 years, from the time before the First Council of Nicaea in 325 AD until after the First Council of Constantinople in 381 AD.
What was the Council of Nicaea?The First Council of Nicaea was a council of Christian bishops convened in the Bithynian city of Nicaea (now ?znik, Bursa province, Turkey) by the Roman Emperor Constantine I in 325 AD. Its main accomplishments were settlement of the Christological issue of the divine nature of God the Son and his relationship to God the Father, the construction of the first part of the Nicene Creed, establishing uniform observance of the date of Easter, and promulgation of early canon law.
Who are Khan Academy?Khan Academy is a non-profit educational organization. Created in 2006 by educator Salman Khan with the goal of creating a set of online tools that help educate students. The organization produces short lessons in the form of YouTube videos. Its website also includes supplementary practice exercises and materials for educators. All resources are available to users of the website.
Where is Nicaea?Nicaea or Nicea was an ancient city in northwestern Anatolia. It is primarily known as the site of the First and Second Councils of Nicaea (the first and seventh Ecumenical councils in the early history of the Christian Church), the Nicene Creed (which comes from the First Council), and as the capital city of the Empire of Nicaea following the Fourth Crusade in 1204, until the recapture of Constantinople by the Byzantines in 1261.