It was thought that this memorial of Pharaoh Khufu was the pillar referred to at Isaiah 19:19, 20: “In that day there will prove to be an altar to Jehovah in the midst of the land of Egypt, and a pillar to Jehovah beside its boundary. And it must prove to be for a sign and for a witness to Jehovah of armies in the land of Egypt.”

The pillar “beside [Egypt’s] boundary” points to the congregation of anointed Christians, which is “a pillar and support of the truth” and which stands as a witness in “Egypt,” the world that they are about to leave.​—1 Timothy 3:15.