11. their courses] Compare 1 Chronicles xxiv. 1–19.
¹²also the Levites which were the singers, all of them, even Asaph, Heman, Jeduthun, and their sons and their brethren, arrayed in fine linen, with cymbals and psalteries and harps, stood at the east end of the altar, and with them an hundred and twenty priests sounding with trumpets:)
12. Asaph, Heman, Jeduthun, and their sons] Compare 1 Chronicles xxv. 1–7.
psalteries ... harps] See 1 Chronicles xiii. 8, notes.
at the east end of the altar] Looking westward, facing the Holy of Holies. To face the east was to turn the back upon the sanctuary; Ezekiel viii. 16.
trumpets] See 1 Chronicles xv. 24, note.
¹³it came even to pass, when the trumpeters and singers were as one, to make one sound to be heard in praising and thanking the Lord; and when they lifted up their voice with the trumpets and cymbals and instruments of music[¹], and praised the Lord, saying, For he is good; for his mercy endureth for ever: that then the house was filled with a cloud, even the house of the Lord, ¹⁴so that the priests could not stand to minister by reason of the cloud: for the glory of the Lord filled the house of God.
[¹] Or, for song.
13. of music] Rather, as margin, for song.
for his mercy endureth for ever] 1 Chronicles xvi. 41.