So they departed from the mountain of the LORD on a journey of three days; and the ark of the covenant of the LORD went before them for the three days' journey, to search out a resting place for them.
Numbers 10:33
Surrounding context
10:32 And it shall be, if you go with us--indeed it shall be--that whatever good the LORD will do to us, the same we will do to you."
10:33 So they departed from the mountain of the LORD on a journey of three days; and the ark of the covenant of the LORD went before them for the three days' journey, to search out a resting place for them.
10:34 And the cloud of the LORD was above them by day when they went out from the camp.