The Commonitorium (Classical Latin: [kɔmmɔnɪˈtoːrɪ.ũː], Ecclesiastical Latin: [kommoniˈtori.um]) is the name of a c. AD 430 poem by the Latin poet and Christian bishop Orientius. Written in elegiac couplets, the Commonitorium is made up of 1036 verses and has traditionally been divided into two books (although there is reason to believe that the division is arbitrary). The poem is hortatory and didactic in nature, describing the way for the reader to attain salvation, with warnings about the evils of sin.