They went up by the Negev and came to Hebron; and Ahiman, Sheshai and Talmai, the sons of Anak, were there. (Now Hebron was built seven years before Zoan in Egypt.) Bible

“the sons of Anak.” Anak was one of the Nephilim, the “Fallen Ones,” just as Numbers 13:33 says. Anak, was one of the sons of Arba, who was either the founder of Hebron or a very important person there (Josh. 15:13-14). [For more on the Nephilim, see commentary on Gen. 6:4].

Commentary for: Numbers 13:22