“The leprous person who has the disease shall wear torn clothes and let the hair of his head hang loose, and he shall cover his upper lip and cry out, ‘Unclean, unclean.’ He shall remain unclean as long as he has the disease. He is unclean. He shall live alone. His dwelling shall be outside the camp.” Leviticus 13:45-46
The word that is translated as “leprosy” is actually indicative of a spectrum of skin diseases. Having it examined by the priest and evaluated might have you quarantined. It was not a punishment for moral failure, but was done to keep it from spreading.
The question that is not unreasonable to ask is this, “If God could intervene in the lives of His people by parting the Red Sea, could He not have intervened in their lives by healing them of this disease?” Of course, this is the beginning of all questions about why God allows suffering.
Suffering was not originally planned. It came as a result of the curse of the fall of man. Suffering became the rule. But it was a rule that coexisted with God’s original rule, that man was given dominion over the earth. So man had dominion over a cursed world. He would now have thorns and weeds to contend with, but he had the authority to do it. Likewise, disease was allowed to exist, but man could concoct ways to overcome it. It was his responsibility.
God could intervene, but it is the exception to the rule. All miracles are the exception to the rule. But even those are invoked by a man. Moses did not part the Red Sea. But it parted when he extended his hand as the Lord commanded.