The sons of Amram: Aaron and Moses. Aaron was set apart to consecrate the most holy things, that he and his sons for ever should burn incense before the LORD, and minister to him and pronounce blessings in his name for ever.
These were the sons of Levi by their fathers' houses, the heads of fathers' houses as they were registered according to the number of the names of the individuals from twenty years old and upward who were to do the work for the service of the house of the LORD.
"but their duty shall be to assist the sons of Aaron for the service of the house of the LORD, having the care of the courts and the chambers, the cleansing of all that is holy, and any work for the service of the house of God;
to assist also with the showbread, the flour for the cereal offering, the wafers of unleavened bread, the baked offering, the offering mixed with oil, and all measures of quantity or size.
and whenever burnt offerings are offered to the LORD on sabbaths, new moons, and feast days, according to the number required of them, continually before the LORD.
Thus they shall keep charge of the tent of meeting and the sanctuary, and shall attend the sons of Aaron, their brethren, for the service of the house of the LORD."