MORRISTOWN, Tenn. — A mother and son pleaded guilty in federal court Feb. 19 to stealing more than $1.5 million from a Southern Baptist church where the mother worked for 47 years. Barbara Whitt, 69, and Michael Whitt, 43, pleaded guilty in U.S. district court to bank fraud and money laundering related to funds embezzled from First Baptist Church, Morristown,…