These were the leaders of their families: Epher, Ishi, Eliel, Azriel, Jeremiah, Hodaviah, and Jahdiel. They were skilled warriors, men of reputation, and leaders of their families.
The Nephilim were on the earth in those days( and also after this) when the sons of God were having sexual relations with the daughters of humankind, who gave birth to their children. They were the mighty heroes of old, the famous men.