'Ark of the Covenant' in the Bible

At that time the Lord set apart the tribe of Levi to carry the ark of the covenant of the Lord, to stand before the Lord to serve Him and to bless in His name until this day.

So Moses wrote this law and gave it to the priests, the sons of Levi who carried the ark of the covenant of the Lord, and to all the elders of Israel.

that Moses commanded the Levites who carried the ark of the covenant of the Lord, saying,

“Take this book of the law and place it beside the ark of the covenant of the Lord your God, that it may remain there as a witness against you.