the ark. Not the cloud, but the ark; as from Sinai. Compare Numbers 10:33.
the LORD your God. Jehovah your Elohim. App-4.
the Levites. Some codices, with three early printed editions, Septuagint, and Syriac, reed "and the Levites". bearing it. Supply the Ellipsis (App-6.) by adding "[going before]" from next clause.