Cross reference
Numbers 4:27
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 to them in charge all their burden.
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.