Numbers 16:1-2

¹Now Korah, the son of Izhar, the son of Kohath, the son of Levi, with Dathan and Abiram, the sons of Eliab, and On, the son of Peleth, sons of Reuben, took [men]: ²and they rose up before Moses, with certain of the children of Israel, two hundred fifty princes of the congregation, called to the assembly, men of renown;