Many of you may be wondering what is “The Lectionary”. It is a group of specific readings from Scripture designed to be read at worship (or in private) on specific dates.
There is both a Sunday and a Daily lectionary followed by the Roman Catholic Church and the Episcopalian Church. The practice of associating particular texts with specific days started in the 4th Century.
There have been several lectionaries published over the years. The United Church of Christ uses the Revised Common Lectionary, which was published in 1992. It is divided into years A, B, and C. Advent always begins the first season of the lectionary.