27 At the commandment of Aaron and his sons shall be all the service of the sons of the Gershonites, in all their burden and in all their service; and you shall appoint their duty to them in all their responsibilities.
Numbers 4:27 Cross References - WEB
Luke 1:70
70 (as he spoke by the mouth of his holy prophets who have been from of old),
1 Corinthians 11:2
2 Now I praise you, brothers, that you remember me in all things, and hold firm the traditions, even as I delivered them to you.