1 Chronicles 6:31-32; 1 Chronicles 15:16; 1 Chronicles 16:42; 1 Chronicles 25:6-7
And these are they whom David set over the service of song in the house of the LORD, after that the ark had rest.
And they ministered before the dwelling place of the tabernacle of the congregation with singing, until Solomon had built the house of the LORD in Jerusalem: and then they waited on their office according to their order.
And David spake to the chief of the Levites to appoint their brethren to be the singers with instruments of musick, psalteries and harps and cymbals, sounding , by lifting up the voice with joy.
And with them Heman and Jeduthun with trumpets and cymbals for those that should make a sound , and with musical instruments of God. And the sons of Jeduthun were porters.
All these were under the hands of their father for song in the house of the LORD, with cymbals, psalteries, and harps, for the service of the house of God, according to the king's order to Asaph, Jeduthun, and Heman.
So the number of them, with their brethren that were instructed in the songs of the LORD, even all that were cunning , was two hundred fourscore and eight.