Genesis 4:20-22 (NASB)
0 Adah gave birth to Jabal; he was the father of those who dwell in tents and have livestock. 21 His brother’s name was Jubal; he was the father of all those who play the lyre and pipe. 22 As for Zillah, she also gave birth to Tubal-cain, the forger of all implements of bronze and iron; and the sister of Tubal-cain was Naamah.
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-Jabal was "the father of those who dwell in tents and have livestock."
-Jubal was "the father of all those who play the lyre and pipe."
Let's be sensible. Was this TRYING to say "all nomadic herders everywhere are the direct descendants of Jabal"? Was this TRYING to say "all musicians everywhere are the direct descendants of Jubal?" If so, what about nomadic herders who play the pipe? We know THEY existed (and probably exist to this day.) This was saying that these men were the forerunners of those people, the pioneers of those people who did those things.
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There's this tap-dance that was introduced to make Jesus' comments supposedly claim that Adam was "the serpent." The alleged reasoning went thusly:
"Speaking to the apostate Jews of His day, Jesus said, “Ye serpents…"
"Ye are of your father the devil"
and that there must have been some sort of genetic basis for saying he was their father. So, the "father" part had to be literally a genetic bloodline and could not be figurative nor symbolic, while the "serpent" part had to be figurative and symbolic and could not be literal.
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In both the early chapters of Genesis and elsewhere in the Bible, "father" often is symbolic and not referring to a genetic sire. But this writer seems to have missed that- and without "father" being REQUIRED to be genetic, his entire basis for bringing in the Gospels falls down because it does not support his case (if anything, it undermined his case.)
This is not difficult to see, with a plain reading of the text. There is no need for an esoteric or a "mystery" version of the text.