1 Chronicles 15:16-26

Verse 17 - Heman - Asaph - Ethan - These were the three chief musicians in the time of David; see 1Chr 6:31. Verse 20

With psalteries on Alamoth - Some suppose that the word signifies virgins, or women singers, the persons mentioned here being appointed to accompany them with psalteries, and preside over them.

The Vulgate says arcana cantabant, they sang secret things or mysteries; probably prophetic hymns.
Verse 21

On the Sheminith - According to the Targum, this signifies an instrument that sounded an octave, or, according to others, an instrument with eight strings. The Syriac and Arabic have it, instruments to sing with daily, at the third, sixth, and ninth hour; the Vulgate, an octave, for a song of victory: some think the eighth band of the musicians is intended, who had the strongest and most sonorous voices; and that it is in this sense that shelomith and lenatstseach should be understood.
Verse 22

Chenaniah - he instructed about the song - This appears to have been the master singer; he gave the key and the time, for he presided במשא bemassa, in the elevation, probably meaning what is called pitching the tune, for he was skillful in music, and powerful in his voice, and well qualified to lead the band: be might have been precentor.
Verse 26

God helped the Levites - When they saw that God had made no breach among them, as he had in the case of Uzza, in gratitude for their preservation, and his acceptance of their labor, they sacrificed seven bullocks and seven rams.
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