Mark Vroegop (MDiv, Grand Rapids Theological Seminary) is the lead pastor of College Park Church in Indianapolis and the author of the ECPA 2020 Christian Book of the Year Dark Clouds, Deep Mercy: Discovering the Grace of Lament and Weep with Me: How Lament Opens a Door for Racial Reconciliation. He's married to Sarah, and they have four children and three daughters-in-law.

Joni Eareckson Tada is CEO of Joni and Friends, a global ministry that serves the practical and spiritual needs of people with disabilities. She is also an artist and the author of numerous bestselling books, including Joni; A Place of Healing; and When God Weeps. Joni and her husband, Ken, reside in Calabasas, California.

Books by Mark Vroegop