This is the sum of the tabernacle, even of the tabernacle of testimony, as it was counted, according to the commandment of Moses, for the service of the Levites, by the hand of Ithamar, son of Aaron the priest.
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George Leo Haydock
Ithamar, some time after this, (Numbers i. 50,) was appointed to deliver the necessary vessels to the Levites; part of whose duty it was to take down the tabernacle and set it up again, and to keep an account of all things. (Menochius)