The World English Bible (WEB) Book of Numbers, written by an unknown author, is the fourth book of the Pentateuch and the twentieth book of the Bible overall. "Numbers" describes the events that happened to the Israelites in the desert during their journey from Egypt to the promised land. The book consists of a timeline of the formation and organization of the nation of Israel, the laws and writings that were given to Moses on Mount Sinai, and also the events that occurred during the generation in the wilderness. "Numbers" contains numerous instructions for worship, as well as lists of tribes, the equipment of the Aaronites, and the appointment of Levites for the service of the temple. The book of Numbers is an important document for studying the religious and cultural traditions of the Israelites.