Numbers 10:28-34

²⁸These are the armies of the children of Israel; and they set forward with their forces.

²⁹And Moses said to Obab the son of Raguel the Madianite, the father-in-law of Moses, We are going forward to the place concerning which the Lord said, This will I give to you: Come with us, and we will do you good, for the Lord has spoken good concerning Israel.

³⁰And he said to him, I will not go, but I will go to my land and to my kindred.

³¹And he said, Leave us not, because you have been with us in the wilderness, and you shall be an elder amongst us.

³²And it shall come to pass if you will go with us, it shall even come to pass that in whatever things the Lord shall do us good, we will also do you good.

³³And they departed from the mount of the Lord a three days' journey; and the ark of the covenant of the Lord went before them a three days' journey to provide rest for them.

³⁴And the cloud overshadowed them by day, when they departed from the camp.