As a deacon, St. Athanasius attended the Council of Nicea. He was the champion of Orthodoxy at the Council speaking out about the consubstantiality of the Son and the Father. Arius had started a heresy named after himself, “Arianism”, that denied the divinity of Christ. He said that Christ was a creature created by the Father. Athanasius argument won the day; however, he was persecuted throughout his life for this stance by those in power who sided with the heresy. He is also known for writing the definitive biography of St. Anthony of the Desert.