A lectionary (Latin: Lectionarium) is a book or listing that contains a collection of scripture readings appointed for Christian or Judaic worship on a given day or occasion. There are sub-types such as a "gospel lectionary" or evangeliary, and an epistolary with the readings from the New Testament Epistles.
Generally, three Old Testament lections, a selection from the prophets, and three readings from the New Testament are prescribed for each Sunday and Feast day. The New Testament readings include a reading from Acts, another from the Catholic Epistles or the Pauline Epistles, and a third reading from one of the Gospels. During Christmas and Easter a fourth lesson is added for the evening service. The readings reach a climax with the approach of the week of the Crucifixion. Through Lent lessons are recited twice a day except Saturdays. During the Passion Week readings are assigned for each of th
Generally, three Old Testament lections, a selection from the prophets, and three readings from the New Testament are prescribed for each Sunday and Feast day. The New Testament readings include a reading from Acts, another from the Catholic Epistles or the Pauline Epistles, and a third reading from one of the Gospels. During Christmas and Easter a fourth lesson is added for the evening service. The readings reach a climax with the approach of the week of the Crucifixion. Through Lent lessons are recited twice a day except Saturdays. During the Passion Week readings are assigned for each of the major canonical hours.
If there is a weekday Liturgy celebrated on a non-feast day, the custom is to read the Pauline epistle only, followed by the Gospel.