Lilith? I gotta say that that makes no sense. I never heard of this before and find it rather strange. The name doesn't appear in the bible and therefore I cannot accept it as canonical.

As for the twice killed goliath, I'd assume that the first verb is more or less struck down and the second is slew, or perhaps verb tenses. What matters is that that one seems to be a "lost in translation discrepancy"

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Near a tree by a river there's a hole in the ground
where an old man of iron goes around and around
and his mind is a beacon in the veil of the night
for a strange kind of fashion there's a wrong and a right.