Athanasius

In a commemorative event observed on January 18, the Bulgarian Orthodox Church honors the revered Saint Athanasius the Great. Acknowledged as a staunch defender of authentic church teachings, Saint Athanasius holds the title "father of Orthodox theology" for his theological arguments establishing the equality and identity of the Holy Trinity - God, Son, and Holy Spirit.

The Orthodox Church today honors the memory of Athanasius the Great. The holiday is called Atanasovden by the people.