In the liturgical

Liturgy

Liturgy is either the customary public worship done by a specific religious group, according to its particular traditions or a more precise term that distinguishes between those religious groups who believe their ritual requires the "people" to do the "work" of responding to the priest, and those...

 traditions of Western Christianity

Western Christianity

Western Christianity is a term used to include the Latin Rite of the Catholic Church and groups historically derivative thereof, including the churches of the Anglican and Protestant traditions, which share common attributes that can be traced back to their medieval heritage...

, the Epistle side is the term used to designate the side of a church on which the Epistle

Epistle

An epistle is a writing directed or sent to a person or group of people, usually an elegant and formal didactic letter. The epistle genre of letter-writing was common in ancient Egypt as part of the scribal-school writing curriculum. The letters in the New Testament from Apostles to Christians...

 is read during the Mass

Mass (liturgy)

"Mass" is one of the names by which the sacrament of the Eucharist is called in the Roman Catholic Church: others are "Eucharist", the "Lord's Supper", the "Breaking of Bread", the "Eucharistic assembly ", the "memorial of the Lord's Passion and Resurrection", the "Holy Sacrifice", the "Holy and...

 or Eucharist

Eucharist

The Eucharist , also called Holy Communion, the Sacrament of the Altar, the Blessed Sacrament, the Lord's Supper, and other names, is a Christian sacrament or ordinance...

. Facing the altar

Altar

An altar is any structure upon which offerings such as sacrifices are made for religious purposes. Altars are usually found at shrines, and they can be located in temples, churches and other places of worship...

, it is the right-hand side.

The Gospel side is the other side of the church, where the Gospel

Gospel

A gospel is an account, often written, that describes the life of Jesus of Nazareth. In a more general sense the term "gospel" may refer to the good news message of the New Testament. It is primarily used in reference to the four canonical gospels of Matthew, Mark, Luke, and John...

 is read. Facing the altar, it is the left-hand side. In some places, especially if a comment is based on a romance language source, the Gospel side will be cited as the Evangelist side.

In the Tridentine Mass

Tridentine Mass

The Tridentine Mass is the form of the Roman Rite Mass contained in the typical editions of the Roman Missal that were published from 1570 to 1962. It was the most widely celebrated Mass liturgy in the world until the introduction of the Mass of Paul VI in December 1969...

 and the old Book of Common Prayer

Book of Common Prayer

The Book of Common Prayer is the short title of a number of related prayer books used in the Anglican Communion, as well as by the Continuing Anglican, "Anglican realignment" and other Anglican churches. The original book, published in 1549 , in the reign of Edward VI, was a product of the English...

, which are still in use among some communities, the lectern

Lectern

A lectern is a reading desk with a slanted top, usually placed on a stand or affixed to some other form of support, on which documents or books are placed as support for reading aloud, as in a scripture reading, lecture, or sermon...

 holding the Missal

Missal

A missal is a liturgical book containing all instructions and texts necessary for the celebration of Mass throughout the year.-History:Before the compilation of such books, several books were used when celebrating Mass...

was moved from the Epistle side of the altar to the Gospel side after the reading of the Epistle.