Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX

2 Chronicles 29:27

And Ezekias told [them] to offer up the whole-burnt-offering on the altar: and when they began to offer the whole-burnt-offering, they began to sing to the Lord, and the trumpets [accompanied] the instruments of David king of Israel.

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