In Sacred ScriptureHow To PrayThe Mysteries:JoyfulLuminousSorrowfulGloriousHome The Holy Rosary The rosary probably began as a practice by the laity to imitate the monastic Divine Office (Breviary or Liturgy of the Hours), during the course of which the monks daily prayed the 150 Psalms. The laity, many of whom could not read, substituted 50, or even 150, Ave Marias (Hail Marys) for the Psalms. This prayer, at least the first half of it so directly biblically, seems to date from as early as the 2nd century, as ancient graffiti at Christian sites has suggested. Sometimes a cord with knots on it...