of the faith: a phrase used in the Roman Catholic Church to qualify certain teachings as being divinely revealed, belief in them therefore being obligatory.
adjective
RC Church (of a doctrine) belonging to the essentials of the faith, esp by virtue of a papal ruling
The Panarion of Epiphanius of Salamis: Books II and III; De Fide
de Fide, de Deo Uno Et Trino, de Deo Creante Et Elevante, de Verbo
Liberal Dictionary | de Fide & Officiis Christianorum Liber. Authore Thoma
Liberal Dictionary | de Fide & Officiis Christianorum. Liber Posthumus. Autore