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.