NASHVILLE, Tenn. — New York Times bestselling author Mary Beth Chapman and multi-Grammy Award-winning singer-songwriter Steven Curtis Chapman have two new milestones to celebrate: 40 years of marriage and writing their first book together. “Still Here: Life Together on the Long Way Home” (B&H Publishing Group) reveals, for the first time, behind-the-scenes stories of a couple held together by divine grace and mercy. The Chapmans’ story, which began as young love on a college campus, has aged into a cherished but challenging shared journey through the complexities of life. “Still Here” provides a vulnerable narrative from two imperfect people who love God most—and love each other almost as much. Their book doesn’t sugar coat the difficulties in their 41-year marriage. It goes into candid detail about fights, tragedies and the strain brought by Steven’s career on the road. They forgo quick tips and hot takes, instead offering an authentic recollection of lived lessons and hard-won wisdom earned across four decades. “Until now, we have shied away from writing about our marriage because we thought it …