On strict fast days when food and drink are prohibited before vespers, "e.g.", Christmas Eve, the Annunciation when it falls on a weekday of great lent, or Holy Saturday, Vespers is joined to the Divine Liturgy, functioning in place of the typica as the framework of the hymns of the Liturgy of the Catechumens. After the readings from the Old Testament, the Trisagion is chanted, followed by the Epistle and Gospel, and the Divine Liturgy proceeds normally from that point. On these occasions, as at other times when the Gospel is read at vespers, the Little Entrance is made with the Gospel Book instead of the censer.