Numbers 10:32-34

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.