David: King of Israel: Organized the Tabernacle Service
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1 Chronicles 9:22
The number of those chosen to be gatekeepers at the thresholds was 212. They were registered by genealogy in their villages. David and Samuel the seer had appointed them to their positions of trust.
1 Chronicles 15:16–24
David also told the leaders of the Levites to appoint their relatives as singers to lift up their voices with joy, accompanied by musical instruments—harps, lyres, and cymbals. / So the Levites appointed Heman son of Joel; from his brothers, Asaph son of Berechiah; from their brothers the Merarites, Ethan son of Kushaiah; / and with them their brothers next in rank: Zechariah, Jaaziel, Shemiramoth, Jehiel, Unni, Eliab, Benaiah, Maaseiah, Mattithiah, Eliphelehu, Mikneiah, and the gatekeepers Obed-edom and Jeiel.
1 Chronicles 16:4–6, 37–43
David appointed some of the Levites to minister before the ark of the LORD, to celebrate, to give thanks, and to praise the LORD, the God of Israel. / Asaph was the chief, Zechariah was second, then Jeiel, Shemiramoth, Jehiel, Mattithiah, Eliab, Benaiah, Obed-edom, and Jeiel. They were to play the harps and lyres, while Asaph sounded the cymbals / and the priests Benaiah and Jahaziel blew the trumpets regularly before the ark of the covenant of God.