SUNDAY

Stephen Prothero (“The American Bible: How Our Words Unite, Divide, and Define a Nation”) reads at 10:15 a.m. at Trinity Church, Copley Square . . . Heather Andersen (“I Never Intended to Be Brave: A Woman’s Bicycle Journey Through Southern Africa”) reads at 2 p.m. at Bestsellers Cafe, 24 High St., Medford