When I saw the episode where we first see the statue of "Tawrawet", I was caught by the echoes of ancient Egyptian influence on the island and intrigued. Now, I realize it was just Jacob's predecessors in ancient times, that lived on the island. This ancient island protector invited some Egyptian tribes to the island, perhaps one, or more were "Candidates". They must have erected the statue to try and over-come the Fertility problems on the island. If you can't leave, and you can't have children, then your family dies out fast on the island. All a part of progress on the island.