Korah, the leading spirit in this movement, was a Levite, of the family of Kohath, and a cousin of Moses; he was a man of ability and influence. Though appointed to the service of the tabernacle, he had become dissatisfied with his position and aspired to the dignity of the priesthood. The bestowal upon Aaron and his house of the priestly office, which had formerly devolved upon the first-born son of every family, had given rise to jealousy and dissatisfaction, and for some time Korah had been secretly opposing the authority of Moses and Aaron, though he had not ventured upon any open act of rebellion. He finally conceived the bold design of overthrowing both the civil and the religious authority. He did not fail to find sympathizers. Close to the tents of Korah and the Kohathites, on the south side of the tabernacle, was the encampment of the tribe of Reuben, the tents of Dathan and Abiram, two princes of this tribe, being near that of Korah. These princes readily joined in his ambitious schemes. Being descendants from the eldest son of Jacob, they claimed that the civil authority belonged to them, and they determined to divide with Korah the honors of the priesthood.