What is the context of Numbers 4:9-10?

• The Duties of the Descendants of Kohath (Numbers 4:1-16 true)
• Duties of the Kohathites (Numbers 4:1-20 true)
• The Kohathites (Numbers 4:1-20 true)
• Duties of the Kohathite Clan (Numbers 4:1-20 true)
• Duties of the Sons of Kohath (Numbers 4:1-20 true)
• The Census of the Kohathites (Numbers 4:1-49 true)
• Duties of the Kohathites, Gershonites, and Merarites (Numbers 4:1-49 true)