Charles Ellicott Commentary 2 Chronicles 29:28

"And all the assembly worshipped, and the singers sang, and the trumpeters sounded; all this [continued] until the burnt-offering was finished." — 2 Chronicles 29:28 (ASV)

Worshipped. — Were worshipping. Septuagint προσεκύνει.

The singers. — Hebrew, the song. So we might say, “the music was playing;” or even “the song was singing,” i.e., being sung.

The trumpeters sounded. — And the clarions were blowing (literally, clarioning). The participle is masculine, although the noun is properly feminine, because here the word “clarions” really stands for the clarion-players. So in modern orchestras they speak of “the violins,” or “the ‘cellos,” meaning the players on those instruments.

And all this. — Literally, the whole, until the burnt offering was finished.

This passage is highly interesting for the light it sheds on the way the worship of the second Temple was conducted in the fourth century B.C., the probable age of the chronicler; and no doubt also in the times addressed here, because the Temple ritual would naturally be a matter of immemorial tradition. (Compare 2 Chronicles 7:5–6).