The Honorable Sharon Pratt, J.D., former mayor of Washington, D.C., will be the guest preacher at Union Chapel in Oak Bluffs on Sunday, July 6.

Bishop Robert Christopher Wright from Atlanta, Ga., will address the congregation this Sunday, August 18, at Union Chapel in Oak Bluffs at the 10 a.m. service. His sermon is titled The God of Now.

Rev. Wright is the first African American to become an Episcopal bishop in Georgia. He was elected by the lay delegates and priests of the Diocese of Atlanta in June of 2012. Prior to his ordination as bishop, Bishop Wright was canon pastor and vicar of St. Saviour at the Cathedral of St. John the Divine in New York city and chaplain of the Cathedral School.

This Sunday, July 21, Reverend Susan Sparks returns to Union Chapel.

A trial lawyer turned standup comedian and Baptist minister, Rev. Susan Sparks is America’s only female comedian with a pulpit.

On a hot Sunday morning in Oak Bluffs, the Hon. Margaret Marshall’s words were focused on a continent and an era away: South Africa during the apartheid era, when Nelson Mandela was a source of inspiration to Ms. Marshall and so many others.

On Sunday, July 14, Robert Allan Hill, dean of Marsh Chapel and a professor of New Testament and Pastoral Theology at Boston University, will be the guest preacher at the Union Chapel in Oak Bluffs.

Mr. Hill’s religious leadership at Boston University encompasses all of the 17 schools and colleges and the larger community, and is rooted in the historic pulpit of Marsh Chapel, whose Sunday service is broadcast on NPR each Sunday morning at 11 a.m.

On Sunday, July 7, Margaret H. Marshall, former Chief Justice of the Supreme Judicial Court of Massachusetts, will be the featured speaker at Union Chapel in Oak Bluffs. Her talk begins at 10 a.m. and is entitled Immigration and Justice.

Union Chapel in Oak Bluffs begins its 2013 season on Sunday, June 30, with a slate of visiting preachers, some returning for their second or third visit and others preaching here for their first time.

The Martha's Vineyard Preservation Trust confirmed this week that it will buy Union Chapel, the storied Oak Bluffs chapel whose rich history forms a distinct chapter in the annals of the Vineyard as a summer resort.