And the priests...on their watches as David had divided them into twenty-four watches, for each watch to serve its week, and the Levites likewise on their twenty-four watches
to give thanks with musical instruments, for they recited
(Ps. 136): "Give thanks to the Lord for He is good, for His loving kindness is eternal."
with David's praise The musical instruments with which they recited David's praise and the thanksgivings were in the Levites' hands.
and the priests were sounding the trumpets opposite them For it was incumbent upon them to play music with the trumpets, as it is said
(Num. 10:8): "And the sons of Aaron, the priests, shall blow [with the trumpets]."