The Ology HC by Marty Machowski

In the cellar of the old stone cathedral, Carla and Timothy uncover a life-changing treasure, a carefully wrapped ancient book known as The Ology. What adults might describe as a beautifully illustrated storybook of systematic theology, the kids discover to be a story of adventure, mystery and wonder that leads them to the truth about God, themselves and the world around them.

The Ology gives kids of all ages a beginner's theology book to help them understand who God is and how we, as his children, relate to him. It is a starting point to learning theology and aims to create a hunger and desire in children to learn more as they grow older.
 
"The Ology has quickly become my favorite introduction to Christianity for children.  Machowski writes with a profound simplicity that children will understand, yet with a depth and beauty that will move adults to worship.  And he makes the gospel crystal clear.  This is a wonderful resource for family worship or children's devotions."  Jon Bloom, President, Desiring God