Exodus 18:24
"So Moses hearkened to the voice of his father in law, and did all that he had said."
Cross References (ranked by relevance)
And Shechaniah the son of Jehiel, one of the sons of Elam, answered and said unto Ezra, We have trespassed against our God, and have taken strange wives of the people of the land: yet now there is hope in Israel concerning this thing.
A wise man will hear, and will increase learning; and a man of understanding shall attain unto wise counsels:
Hearken now unto my voice, I will give thee counsel, and God shall be with thee: Be thou for the people to God-ward, that thou mayest bring the causes unto God:
Then arose Ezra, and made the chief priests, the Levites, and all Israel, to swear that they should do according to this word. And they sware.
And the eye cannot say unto the hand, I have no need of thee: nor again the head to the feet, I have no need of you.