GOD'S WORD® Translation
The priests were standing at their posts. So were the Levites who had the LORD's musical instruments which King David made for praising the LORD with "his mercy endures forever" and which he used to offer praise. The priests were opposite the Levites blowing trumpets while all Israel was standing [there].

American Standard Version
And the priests stood, according to their offices; the Levites also with instruments of music of Jehovah, which David the king had made to give thanks unto Jehovah, (for his lovingkindness endureth for ever,) when David praised by their ministry: and the priests sounded trumpets before them; and all Israel stood.

Berean Study Bible
The priests stood at their posts, as did the Levites with the musical instruments of the LORD, which King David had made for giving thanks to the LORD and with which David had offered praise, saying, “For His loving devotion endures forever.” Across from the Levites, the priests sounded trumpets, and all the Israelites were standing.

Douay-Rheims Bible
And the priests stood in their offices: and the Levites with the instruments of music of the Lord, which king David made to praise the Lord: because his mercy endureth for ever, singing the hymns of David by their ministry: and the priests sounded with trumpets before them, and all Israel stood.

English Revised Version
And the priests stood, according to their offices; the Levites also with instruments of music of the LORD, which David the king had made to give thanks unto the LORD, for his mercy endureth for ever, when David praised by their ministry: and the priests sounded trumpets before them; and all Israel stood.

King James Bible
And the priests waited on their offices: the Levites also with instruments of musick of the LORD, which David the king had made to praise the LORD, because his mercy endureth for ever, when David praised by their ministry; and the priests sounded trumpets before them, and all Israel stood.

World English Bible
The priests stood, according to their positions; the Levites also with instruments of music of Yahweh, which David the king had made to give thanks to Yahweh, when David praised by their ministry, saying "For his loving kindness endures for ever." The priests sounded trumpets before them; and all Israel stood.

Young's Literal Translation
And the priests over their charges are standing, and the Levites with instruments of the song of Jehovah -- that David the king made, to give thanks to Jehovah, for to the age is His kindness, in David's praising by their hand -- and the priests are blowing trumpets over-against them, and all Israel are standing.

2 Chronicles 7:6 Additional Translations ...