from this article:
http://www.msnbc.msn.com/id/10271314/
Meantime, the island's two presumptive holy men — Locke and Eko — finally hunkered down. Locke played the Dharma orientation film for Michael and Eko.
The film unsettled Eko, who later revealed to Locke what was hidden inside the Bible found in the tail-enders' Dharma station: some of the film's missing footage of Dr. Marvin Candle.
Demonstrating that he could run enigmatic circles around Locke, Eko prefaced this revelation by recounting the biblical tale of Josiah (the Judaic king who purged the Jerusalem temple of idols and repaired it), drawing a parallel between Josiah's rediscovery of God's laws and his own discovery of the Bible.
When Locke marveled at the coincidence of it all, Eko replied, "Don't mistake coincidence for fate."
The Josiah thing is admittedly puzzling, and how fortunate there's six weeks to hash it all out. For one thing, Josiah later fatally led his forces into Megiddo, the valley where Armageddon supposedly will take place. There's Kate's black horse, which also has apocalyptic overtones. Add that to last week's curious moment with Locke filling "Gilgamesh" into his crossword puzzle, responding to the clue, "Enkidu's friend." Is Locke Gilgamesh? Is Eko Enkidu? (Totally confused?) Nothing like a Christmas-vacation research project.
also links to gilgamesh/enkidu summary:
http://www.sparknotes.com/lit/gilgamesh/summary.html