When everything he had was mediated through the wisdom of his father, he didn't have to worry about maintenance. He was like the birds who don't plant and reap their food, or the lilies who don't toil and weave their clothing. His father just provided it.
And the younger of them said to his father, "Father,
If I were to run away from home, I'd have to use gas money my parents put in my wallet for me. It's all terribly ironic, but from the limited view of a child, it somehow makes sense. How much more ironic when we try to run away from God?