And the Levites stood with the instruments of David,.... Which were invented, directed, and ordered to be used by him, and are the same as in the preceding verse:

and the priests with the trumpets; which were made by the direction of Moses, according to the order of God, Numbers 10:2.

דויד כּלי are the musical instruments the use of which David introduced into the public worship; see 1 Chronicles 23:5. - The first clause, 2 Chronicles 29:27, "And Hezekiah commanded to offer the burnt-offering upon the altar," is repeated from 2 Chronicles 29:21 to form a connection for what follows: "At the time when the sacrificial act began, the song of Jahve commenced," i.e., the praising of Jahve by song and instrumental music (יהוה שׁיר equals ליהוה שׁיר, 1 Chronicles 25:7), and (the blowing) of trumpets, "and that under the leading (ידי על) of the instruments of David." This is to be understood as denoting that the blowing of the trumpets regulated itself by the playing of the stringed instruments-suited itself to the song and the music of the stringed instruments.

And the Levites stood with the instruments of David, and the priests with the trumpets.

29:20-36 As soon as Hezekiah heard that the temple was ready, he lost no time. Atonement must be made for the sins of the last reign. It was not enough to lament and forsake those sins; they brought a sin-offering. Our repentance and reformation will not obtain pardon but in and through Christ, who was made sin, that is, a sin-offering for us. While the offerings were on the altar, the Levites sang. Sorrow for sin must not prevent us from praising God. The king and the congregation gave their consent to all that was done. It is not enough for us to be where God is worshipped, if we do not ourselves worship with the heart. And we should offer up our spiritual sacrifices of praise and thanksgiving, and devote ourselves and all we have, as sacrifices, acceptable to the Father only through the Redeemer.