The Rev. Julian Armand Cook will be Union Chapel’s guest preacher this Sunday, August 26. Rev. Cook is the senior pastor of the historic St. Mark Congregational Church, United Church of Christ of Boston. Founded in 1895, St. Mark is the city’s oldest black congregational church.

A native of Chicago, Ill., Rev. Cook is also a classically-trained baritone vocalist. He is an ordained Baptist minister, and a sought-after preacher, writer, lecturer, conference presenter and public thinker.

All are welcome to come Sunday and hear his message, God Is for Us at the Union Chapel in Oak Bluffs. The organ prelude begins at 9:40 a.m. and worship begins at 10 a.m.