More of God's Promises Kept: Devotions Inspired by Charles Spurgeon by Catherine Mackenzie is a devotional book for children ages 9 to 14 years. Based on devotional readings by Charles Spurgeon, this book is adapted to be accessibly for today's modern tween. Catherine Mackenzie encourages a new generation to cling to the promises of God. Each entry finishes with a suggestion for what the reader should do in response to what they have read, and a prayer.