Translations
The priests stood at their assigned posts; opposite them the Levites played the musical instruments that King David had crafted for worshiping Yahweh — for 'His faithful love endures forever' — just as David had ordained. The priests blew the trumpets, and all Israel stood in reverence.
The priests stood at their stations, and the L'vi'im with YHWH's instruments of song that King Dawid had made for giving thanks to YHWH — 'for His covenant-love endures for ever' — when Dawid would offer praise by their hand; and facing them the priests sounded trumpets, while all Yisra'el stood.
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.
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.

