Athanasius

Athanasius (c. 296-373 AD) was an influential early Christian theologian and Bishop of Alexandria. He is best known for his strong opposition to Arianism, a belief that denied the full divinity of Jesus Christ. Athanasius argued that Jesus is fully God, co-eternal with the Father, which became a foundational doctrine in Christianity. His writings, particularly "On the Incarnation," defended the concept of the Trinity and shaped Christian orthodoxy. Athanasius was a prominent figure in the First Council of Nicaea in 325 AD, where the Nicene Creed was established, affirming the belief in the divinity of Christ.