For His own self

The fourth question of the catechism we are using asks, Why did God make all things? The correct answer is: For His own glory.

However, as Elisabeth was learning the catechism, she didn't catch the glory bit, and so would regularly answer, "For His own self." Her answer caused me to think. "For His own self" is not that far off the mark of "For His own glory" and may be a good entry point for a child to understand.