Now these were the singers, patriarchal leaders of the Levites, who stayed in the chambers and were exempt from other service, for they were on duty day and night.
And they are singing a new song before the throne and before the four living creatures and the elders; and no one is able to learn the song except the 144,000 who had been redeemed from the earth.
Then Hezekiah reestablished the divisions of the kohanim and the Levites together with their divisions, each of the kohanim and Levites according to his service: for burnt offerings, peace offerings, to minister, to praise, or to sing praises in the gates of the courts of Adonai.
the rows of bread, the fine flour for the grain offering, the matzot , the cake baked on the griddle or mixed and every measure of capacity and length,
and whenever burnt offerings were offered to Adonai on Shabbatot, New Moons and the moadim. They were to serve regularly before Adonai, according to the proper number in the manner prescribed for them.