Numbers

Numbers 26:9

9and the sons of Eliab were Nemuel, Dathan and Abiram. It was Dathan and Abiram, chosen by the congregation, who fought against Moses and Aaron1 with the followers of Korah who rebelled against AO.
Translation Notes

1Not surprising that the firstborn, i.e., Reuben’s lineage, also wanted to claim the position of Moses and Aaron.