Bestselling author of “The Insanity of God,” missions expert Nik Ripken to release new devotional on sacrifice “The Insanity of Sacrifice: A 90-Day Devotional” [NASHVILLE, TENN., September 30, 2019—] Bestselling author Nik Ripken, the world’s leading expert on Christians in persecution, especially in Muslim contexts, will release his first devotional this fall,“The Insanity of Sacrifice: A 90-Day Devotional” (October 1, B&H Publishing). Ripken, who has been mentored by believers in persecution throughout his 30-year missionary career, offers 90 devotionals to…