Identity teaches that "Israel" was the name given to Jacob after he wrestled with the angel at Penuel as described in Genesis 32:26–32. "Israel" then had twelve sons, which began the Twelve Tribes of Israel. In 975 BC the ten northern tribes revolted, seceded from the south, and became the Kingdom of Israel. After they were subsequently conquered by Assyria at approximately 721 BC, the ten tribes disappeared from the Biblical record and became known as the Lost Tribes of Israel.