You are hereHomeBible ReviewDecember 1993Why Did God Harden Pharaoh’s Heart? The ka sign represents the spirit or essence of a person. See, John D. Currid, “An Examination of the Egyptian Background of the Genesis Cosmogony,” Biblische Zeitschrift (1991), p. 24, n. 31. Join the BAS Library! Already a library member? Log in here. Institution user? Log in with your IP address.