The Angelus is a Catholic devotion commemorating the Incarnation of Christ. As with many Catholic prayers, the name Angelus is derived from its incipit—the first few words of the text: Angelus Domini nuntiavit Mariæ. The devotion is practised by reciting as versicle and response three Biblical verses narrating the mystery, alternating with the prayer "Hail Mary". The Angelus exemplifies a species of prayers called the "prayer of the devotee".

The Hail Mary or Angelical salutation is a traditional Catholic prayer addressing Mary, the mother of Jesus. The prayer is based on two biblical passages featured in the Gospel of Luke: the Angel Gabriel's visit to Mary and Mary's subsequent visit to Elisabeth, the mother of John the Baptist. It is also called the Angelical Salutation, as the prayer is based on the Archangel Gabriel's words to Mary. The Hail Mary is a prayer of praise for and of petition to Mary, regarded as the Theotokos. Since the 16th century, the version of the prayer used in the Catholic Church closes with an appeal for her intercession. The prayer takes different forms in various traditions and has often been set to music.