David ordered the leaders of the Levites to appoint their kinsmen, the singers, with musical instruments, harps, lyres, and cymbals, to joyfully make their voices heard.
The kohanim Shebaniah, Joshaphat, Nethanel, Amasai, Zechariah, Benaiah and Eliezez were to blow the trumpets before the Ark of God. Obed-edom and Jehiah were gatekeepers for the Ark.
Moreover, David and the commanders of the army, set apart for avodah the sons of Asaph, Heman, and Jeduthun who prophesied with lyres, harps and cymbals. The list of those who performed this work according to their service was:
So look, God is with us at our head, and His kohanim with the signal trumpets to sound an alarm against you. O men of Israel, do not fight against Adonai, the God of your fathers—for you will not succeed!”
all the Levite singers—Asaph, Heman, Jeduthun, their sons and their relatives—dressed in fine linen with cymbals, harps and lyres, were standing at the east end of the altar and with them were 120 kohanim blowing trumpets.
according to the daily requirement for offerings commanded by Moses for Shabbatot, for New Moons and for the moadim three times a year—at the Feast of Matzot, at the Feast of Shavuot and at the Feast of Sukkot.
Like the garden He laid waste His dwelling, destroyed His appointed meeting place. Adonai has caused moed and Shabbat to be forgotten in Zion. In the indignation of His anger He spurned king and kohen.
and you are presenting a fire offering to Adonai—a burnt offering or a sacrifice to mark fulfilling a vow, a freewill offering, or during moadim —to present a pleasing aroma to Adonai, from the herd or from the flock,
Seven days you will feast to Adonai your God in the place He chooses, because Adonai your God will bless you in all your produce and in all the work of your hand, and you will be completely filled with joy.