A service book containing the Epistle readings for the Mass arranged according to the liturgical year. The Epistle reading is generally taken from the New Testament Epistles, but is sometimes drawn from other New and Old Testament Books. Epistle lists (capitulare lectionum) were very occasionally attached to Bibles or to New Testament volumes. They listed the readings for the various feast days by opening words, again according to the liturgical year. At high mass the Epistle was read by a subdeacon.