Who is Moses from A Tale of Three Kings and what is their importance?

Moses is a great leader who lived in a time before David. Moses is part of a story David is told on the night his son comes to take over his kingdom. Moses was the leader of Israel when two men came to him with a large number of followers. These men thought it was time for Moses to relinquish power to them. Moses told them to come back the next day and God would settle the matter. The next day, these men and their followers were swallowed by the earth. David has his adviser tell him this story in order to show him that sometimes God does answer questions such as who should rule his kingdom on earth. David believes by doing nothing, David is allowing God to make the appropriate decision regarding whether Absalom should take over David's kingdom.