The Nephilim were on the earth in those days, as well as later, when the sons of God slept with the daughters of other humans and had children by them. These children were famous long ago.
These were the heads of Manasseh’s families: Epher, Ishi, Eliel, Azriel, Jeremiah, Hodaviah, and Jahdiel. They were soldiers who were famous heads of their families.
and Nemuel, Dathan, and Abiram were the sons of Eliab. (It was Dathan and Abiram, men chosen by the community, who defied Moses and Aaron’s authority. They joined Korah’s followers when they defied the Lord’s authority.