profession of faith

Short definition from Wiktionary

Noun

1. 1
   A creed; a (typically formulaic) statement of the beliefs of one's religion, often recited during public prayers or liturgies.
2. 2
   A formulaic declaration asserting the orthodoxy of one's beliefs, usually made at baptism, entry into a particular Church, or upon the acceptance of an ecclesial office, and typically including the recitation of a creed.