The Busy Boys: Matthew 21: Be Willing (Stories from Jesus)
Jesus told a story about two busy boys. One says he'll obey but doesn't. The other doesn't obey but in the end, he changes his mind. It's a great story that demonstrates that God has the power to change people and therefore, we must obey Him.
Jesus told great stories about who God is and what he is like; the parables retold in the Stories From Jesus series are presented specifically for young children.