Emphasis is on the fact that rest is beneficial for us to have patience as well as energy for the next day, and that we should pray and trust God to care for our concerns about sleep. Little Cub does have trouble sleeping, even though she didn't have a bad dream, and her mom discovers it is because she had a "busy mind." Mom encourages a calm mind that ponders happy things at bedtime, along with prayers, to ensure a good night's sleep. Little cub recognizes that not getting enough sleep the night before does make her more susceptible to grumpiness the next day, and she's ready for some solid rest the second night. The only area I wish the author would have addressed was the fact that if a child DOES have bad dreams after praying that s/he would have good dreams, God is not ignoring the prayers or punishing the child. We just do not always understand why bad or scary things happen in life, but we can trust that God is always good, always there, always listening and providing.
Even though this book is about sleep, I would not consider it one of those books to set aside for only bedtimes, like I do with "Goodnight Moon" for example. If you have the others in this series (I particularly like "God Gave us Heaven"), or are a fan of classical books, you will enjoy reading this to the little ones in your life. They open the door for your child to ask further questions about the topics presented. This book, or others in the series would make wonderful gifts for baby showers, kids' (8 and under) birthdays or holidays.
In the interest of full disclosure, I received this book from Blogging for Books for this review. I was not required to give a positive review; my opinions are my own.