Chelsey is the co-author of You Are Witnesses of These Things: Sharing the Story of Jesus. This book was written as a resource for congregational members and leaders. It is has been widely used in the North/West Lower Michigan Synod and in synods across the Evangelical Lutheran Church in America.

In addition to co-authoring the book, Chelsey designed its cover, edited it, and managed its production and publicity through Kindle Direct and Arborvitae Books.