Korah, son of Izhar, is known for leading a rebellion against Moses.
Numbers 16:1–40 indicates that Korah rebelled against Moses along with 249 co-conspirators and were punished for their rebellion when God sent fire from heaven to consume all 250 of them. Korah’s Reubenite allies Dathan and Abiram were also punished when God caused the ground to split open beneath their feet swallowing them, their families, anyone associated with Korah, and all their possessions.
Furthermore, the Israelites who did not like what had happened to Korah, Dathan and Abiram (and their families) objected to Moses, and God then commanded Moses to depart from the multitude. God then smote 14,700 men with plague, as punishment for objecting to Korah’s destruction (Numbers 16:41.)