Athanasius is a Father of the Church and the Doctor of Orthodoxy, or right belief. For much of his career, it must have seemed like the whole world was against him as he was exiled at least 5 times for upholding orthodoxy. Praise God that he did not waver in his faith but stood strong and helped maintain orthodox belief in the Church. He is truly a champion of the faith, and we are ever grateful for this servant and saint of God, who is celebrated on January 18.
Perhaps you already know this, but Athanasius was actually the first person to list all 66 book of the Bible as the Christian canon of literature. Below is what he wrote on the topic some 1,700 years ago: