Definitions for "Epistle Side"
when looking into a church from the back it would be the right hand side. This has been the traditional side from which to read the Epistle.
The side of the altar at which the Epistle is read, the right as the congregation sees it. Also the side where the Credence Shelf is located.
The Epistle Side is, facing the Altar, on the right side of the Altar. Traditionally, this is the side the Epistle is read.