Numbers 10
29 Ref Then Moses said to Hobab, the son of his father-in-law Reuel the Midianite, We are journeying to that place of which the Lord has said, I will give it to you: so come with us, and it will be for your profit: for the Lord has good things in store for Israel.
30 Ref But he said, I will not go with you, I will go back to the land of my birth and to my relations.