If these whispers are from biblical times they should be speaking Aramaic, or Hebrew. I looked the name Issac on lostpedia, because I couldn't remember if there was a character with the same name. It turns out Issac was the guy rose and bernard went to see in Australia (healer) and then sarah is Jack's ex wife (of course) I am at a loss to see how these characters voices could be on the island. There is of course the possibility that because Jack was scanned by smokey he would know about Sarah. As far as the biblical thing goes, maybe the writers were pulling names from the bible. And yet another possibility is that it could all be a coincidence seeing as though these name are popular even in today's time. but we all know know that's not true.

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" We kinda like knew that forever ago." -Hurley SE4EP8