Numbers 10:28-34

²⁸This was the order in which the children of Israel were journeying by armies; so they went forward.

²⁹Then 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.

³⁰But he said, I will not go with you, I will go back to the land of my birth and to my relations.

³¹And he said, Do not go from us; for you will be eyes for us, guiding us to the right places in the waste land to put up our tents.

³²And if you come with us, we will give you a part in whatever good the Lord does for us.

³³So they went forward three days' journey from the mountain of the Lord; and the ark of the Lord's agreement went three days' journey before them, looking for a resting-place for them;

³⁴And by day the cloud of the Lord went over them, when they went forward from the place where they had put up their tents.