And with them Heman and Jeduthun, with trumpets and cymbals,
 &c.] Or with them were the trumpets and cymbals, as Kimchi; or, as Piscator supplies it, with them he "left" the trumpets and cymbals: 
 for those that should make a sound;
 by striking upon them: 
 and with musical instruments of God;
 sacred ones, such as were devoted to his service, as psalteries and harps; the Syriac and Arabic versions carry the sense of the words quite differently, that these men did not sing with those musical instruments, but with a pleasant voice, and with pure and acceptable prayers, in humility and uprightness, glorified God: 
 and the sons of Jeduthun were porters;
 at the tabernacle in Gibeon.