Numbers 10:29-33

29Moses said to Hobab son of Reuel the Midianite, Moses’ father-in-law, “We are setting out to the place about which Adonai said, ‘I will give it to you.’ Come with us and we will do good to you, because Adonai has spoken goodness to Israel.”

30But he said to him, “I will not go, because I would rather go to my own country and to my own people.”

31But he said, “Do not leave us now, because you know where we should camp in the wilderness. You can be like eyes to us.

32If you come with us, we will share with you whatever good Adonai gives to us.”

33So they advanced from the mountain of Adonai, a trip of three days, the Ark of the covenant of Adonai going ahead of them for those three days to seek out a resting place for them.