Numbers 10:33

So they set out from the mount of the Lord three days ’ journey . And the ark of the covenant of the Lord went before them three days ’ journey , to seek out a resting place for them.

So they set out from the mountain of the Lord and traveled for three days. The ark of the covenant of the Lord went before them during those three days to find them a place to rest.

And they departed from the mount of the Lord three days' journey : and the ark of the covenant of the Lord went before them in the three days' journey, to search out a resting place for them.