Simplify the following text for a Grade 12 native English-speaking person.
Original: An oral law is a code of conduct in use in a given culture , religion or community application , by which a body of rules of human behavior is transmitted by oral tradition and effectively respected , or the single rule that is orally transmitted .
Simplified: An oral law are rules of human behavior in use in a given culture , religion or other groupe , which is transmitted by oral tradition and respected , or a single rule that is orally transmitted .