Ravi Zacharias to Speak at Tenn. Apologetics Conference 'Defending Truth' SaturdayBy Michael Gryboski, Mainline Church Editor CommentRavi Zacharias speaks at Nabeel Qureshi's funeral in at Houston's First Baptist Church in Houston, Texas, on September 21, 2017. | (Photo: Screengrab/Facebook/Houston's First Baptist Church)Follow Michael Gryboski on Twitter or Facebook