"Glory to you, Lord Christ." The term is from the opening words of the statement in Latin. It is the people's response to the announcement of the gospel at the eucharist (BCP, p. 357). It precedes the reading of the gospel. This response at the announcement of the gospel in the Roman rite was retained by the 1549 BCP. It is omitted before the Passion gospel on Palm Sunday (the Sunday of the Passion), and Good Friday (BCP, pp. 272, 277).
Glossary definitions provided courtesy of Church Publishing Incorporated, New York, NY,(All Rights reserved) from "An Episcopal Dictionary of the Church, A User Friendly Reference for Episcopalians," Don S. Armentrout and Robert Boak Slocum, editors.