St. Athanasius of Alexandria

St. Athanasius of Alexandria was a 4th-century bishop and influential theologian known for defending the Christian doctrine of the Trinity. He argued that Jesus Christ is fully divine, consubstantial with God the Father, against those who believed Jesus was merely human or a lesser being. His most famous work, "On the Incarnation," explains how Jesus' divine nature is essential for salvation. Athanasius played a key role in shaping orthodox Christian beliefs and was instrumental in the early Church's fight against heresies. His leadership helped establish the Nicene Creed, a foundational statement of Christian faith.