The topic for worship services this Sunday at Lookout Mountain Presbyterian Church, 310 North Bragg, will be "The Building of True Church: Hell's Worst Nightmare," with Matthew 16:13-20 as text. Joe Novenson will speak at the sanctuary services at 8, 9:30 and 11 and Frank Hitchings will speak at the 9:30 and 11 a.m. fellowship hall services.