St. Paul the Apostle Parish is offering a four-day Lenten Retreat beginning 6:30 p.m. Sunday, March 10, at St. John Catholic Church, 217 York Street, Bangor, led by the Rev. Augustine Nellary. A penance service will be held Wednesday evening and Mass will be offered at 6 p.m. Monday-Wednesday. Light refreshments will be served in the church hall following the one-hour talks.