Numbers 10:28-32

Thus were the journeyings of the children of Israel according to their armies, when they set forward.

And Moses said unto Hobab, the son of Raguel the Midianite, Moses’ father in law, We are journeying unto the place of which the LORD said, I will give it you: come thou with us, and we will do thee good: for the LORD hath spoken good concerning Israel.

And he said unto him, I will not go; but I will depart to mine own land, and to my kindred.

And he said, Leave us not, I pray thee; forasmuch as thou knowest how we are to encamp in the wilderness, and thou mayest be to us instead of eyes.

And it shall be, if thou go with us, yea, it shall be, that what goodness the LORD shall do unto us, the same will we do unto thee.