for, etc
1 Chronicles 15:16
And David saith to the heads of the Levites to appoint their brethren the singers, with instruments of song, psalteries, and harps, and cymbals, sounding, to lift up with the voice for joy.
1 Chronicles 15:27
And David is wrapped in an upper robe of fine linen, and all the Levites who are bearing the ark, and the singers, and Chenaniah head of the burden of the singers; and on David [is] an Ephod of linen.
he instructed
1 Chronicles 25:7
And their number, with their brethren -- taught in the song of Jehovah, all who are intelligent -- is two hundred, eighty and eight.
1 Chronicles 25:8
And they cause to fall lots -- charge over-against [charge], as well the small as the great, the intelligent with the learner.