People are theorizing that the guy in the Begining was Esau......to give you some insight read this:
"Biblical names
Old Testament
* Adam and Eve are the first people created in the Bible.
* Jacob buys his brother Esau's birth right for a bowl of soup. He is the grandson of Abraham (from which the name Bram is derived), and the father of Benjamin and Dan and the great-great-grandfather of Aaron.
* Aaron is the brother of Moses.
* Naomi is the mother-in-law of Ruth.
* Daniel is a significant Hebrew prophet, exiled in Babylon where he is drawn out of retirement to interpret signs.
New Testament
* John the Baptist is Jesus' second cousin. John is also the name of one of Jesus' closest disciples, generally believed to be "the disciple whom Jesus loved".
* James is the "brother" of Jesus. Two of Jesus' disciples are also named James.
* Thomas (Tom) is the disciple of Jesus Christ also referred to as "Doubting Thomas".
* Abaddon is a Hebrew word for destruction, or place of the abyss, according to Revelation 9:11. Abaddon is often believed by biblical scholars to be Satan, the antichrist or a dark angel.
* Christian Shephard's given name is an adjective used to refer to the religion founded by Jesus Christ or its followers.
The Shadow of Death
The Monster/Cerberus may be an allusion to the Shadow of Death that is referred to in the Bible:
Psalm 23:4- "Even though I walk through the valley of the shadow of death, I will fear no evil, for you are with me; your rod and your staff, they comfort me."
Job 38:17- "Have the gates of death been shown to you? Have you seen the gates of the shadow of death?"
Isaiah 9:2- "The people walking in darkness, have seen a great light; on those living in the land of the shadow of death a light has dawned." (Quoted in Matthew 4:16)
Luke 1:79- "to shine on those living in darkness and in the shadow of death, to guide our feet into the path of peace" re- John the Baptist going ahead of Jesus."
The point being that LOST appears to have some very very strong ties to the Bible and the story might be going in the direction of the Bible or at least be taking a lot of references to the Bible.
We have already seen LOTS of religious tie ins to the bible on the show, it seems as if the big picture the writers had from the beginning might be in the Bible. I don't know what the significance (if any) of this means, but the similarities are too close to ignore.