Religious doctrines are a set of beliefs and practices that define the spiritual life of a particular religion. TENETS are the fundamental beliefs of a religion, which are usually expressed in a formal statement or creed. CREEDS are formal statements of faith that outline the core beliefs of a religion. DOGMAS are specific beliefs or doctrines that are considered to be true and unchangeable by a particular religion. All three of these terms are used to describe the religious doctrines of a particular faith.