Timothy E. Moody
Baker Book House
ISBN 9780801062032
Most of the devotions in this book would be good jumping off points for group discussions or personal meditations.
There were a few where his theology was weak - almost heretical. Yet for someone grounded in their faith, the book will challenge thinking and what you believe and as such can be a tool to help deepen your roots as a Christian.
(First written as Journal Reading Notes in 1999.)