The Revised Common Lectionary is a lectionary of readings or pericopes from the Bible for use in Protestant Christian worship, making provision for the liturgical year with its pattern of observances of festivals and seasons. It was preceded by the Common Lectionary, assembled in 1983, itself preceded by the COCU Lectionary, published in 1974 by the Consultation on Church Union (COCU). This lectionary was derived from various Protestant lectionaries in current use, which in turn were based on the 1969 Ordo Lectionum Missae, a three-year lectionary produced by the Roman Catholic Church following the reforms of the Second Vatican Council.