“Of the Izharites, Chenaniah and his sons were appointed to outside duties for Israel, as officers and judges.”
It is not clear whether this Chenaniah is the same Chenaniah who was in charge of song when they moved the Ark of the Covenant in chapter 15 of this work. Izhar was the grandson of Levi and part of the Kohathites. Some of the Izharites were in charge of the treasuries. Here, however, they are the officers and judges, particularly Chenaniah and his family.
“King David and the elders of Israel, and the commanders of thousands, went to bring up the ark of the covenant of Yahweh from the house of Obed-edom with rejoicing. Because God helped the Levites who were carrying the Ark of the Covenant of Yahweh, they sacrificed seven bulls and seven rams. David was clothed with a robe of fine linen, as also were all the Levites who were carrying the ark. The singers with Chenaniah the leader of the music of the singers also wore linen. David wore a linen ephod. So all Israel brought up the Ark of the Covenant of Yahweh with shouting, to the sound of the horn, trumpets, and cymbals. They made loud music on harps and lyres.”
Once again, this is based on 2 Samuel, chapter 6. King David ordered the Ark of the Covenant brought to his city, Jerusalem. He went out with the elders and the commanders to the house of Obed-edom. They did so with great rejoicing. Here they sacrificed 7 bulls and 7 rams instead of merely an ox and a fat calf as in 2 Samuel. Here King David was not dancing, but he did have on the sacred linen ephod. The others were all dressed in linen. Chenaniah led the musicians as it was not as chaotic as in 2 Samuel. The Levites were carrying the Ark of the Covenant. They shouted and sounded the trumpets, horns, cymbals, harps, and lyres. The music was loud, so stop complaining. There was a great celebration as King David was bringing unity both at a political and a religious level with both the new holy place and place of political power in Jerusalem.