Numbers 10:33

Three days With continued journeys; only it seems probable that the cloud made little pauses, that they might have time for sleep and necessary refreshments. The ark went before them Although in their stations it was in the middle, yet in their marches it went before them; and the cloud was constantly over the ark, whether it stood or went; therefore the ark is said to go before and direct them, not as if the ark could be seen of all the camps, which, as it was carried only upon men's shoulders, was impossible, but because the cloud, which always attended upon the ark, and did, together with the ark, constitute, in a manner, one sign of God's presence, did lead and direct them. To search out A metaphorical expression, for discovering to them; for the ark could not search; and God, who knew all places and things, needed not to search.