The rest of the book of Genesis, and the genealogy supplied does suggest we all descended from one man, by recording propagation and descent from this one man alone. As the rest of holy scripture in it's entirety does as well. Ignoring what does exist right in front of your face, regarding exactly the testimony of the very book we are discussing, is not conducive to properly understanding it's intent. While at the same time, proposing that which it states and or claims nowhere at all.
Gen 5:3 And Adam lived an hundred and thirty years, and begat
a son in his own likeness, after his image; and called his name Seth:
Gen 5:4 And the days of Adam after he had begotten Seth were eight hundred years: and he begat sons and daughters:
Gen 5:6 And Seth lived an hundred and five years, and begat Enos:
Gen 5:7 And Seth lived after he begat Enos eight hundred and seven years, and begat sons and daughters:
Gen 5:9 And Enos lived ninety years, and begat Cainan:
Gen 5:10 And Enos lived after he begat Cainan eight hundred and fifteen years, and begat sons and daughters:
Gen 5:12 And Cainan lived seventy years, and begat Mahalaleel:
Gen 5:13 And Cainan lived after he begat Mahalaleel eight hundred and forty years, and begat sons and daughters:
Gen 5:15 And Mahalaleel lived sixty and five years, and begat Jared:
Gen 5:16 And Mahalaleel lived after he begat Jared eight hundred and thirty years, and begat sons and daughters:
Gen 5:18 And Jared lived an hundred sixty and two years, and he begat Enoch:
Gen 5:19 And Jared lived after he begat Enoch eight hundred years, and begat sons and daughters:
Gen 5:21 And Enoch lived sixty and five years, and begat Methuselah:
Gen 5:22 And Enoch walked with God after he begat Methuselah three hundred years, and begat sons and daughters:
Gen 5:25 And Methuselah lived an hundred eighty and seven years, and begat Lamech:
Gen 5:26 And Methuselah lived after he begat Lamech seven hundred eighty and two years, and begat sons and daughters:
Gen 5:28 And Lamech lived an hundred eighty and two years, and begat a son:
Gen 5:30 And Lamech lived after he begat Noah five hundred ninety and five years, and begat sons and daughters:
Gen 5:32 And Noah was five hundred years old: and Noah begat Shem, Ham, and Japheth.
Gen 6:10 And Noah begat three sons, Shem, Ham, and Japheth.
Gen 10:8 And Cush begat Nimrod: he began to be a mighty one in the earth.
Gen 10:13 And Mizraim begat Ludim, and Anamim, and Lehabim, and Naphtuhim,
Gen 10:15 And Canaan begat Sidon his firstborn, and Heth,
Gen 10:24 And Arphaxad begat Salah; and Salah begat Eber.
Gen 10:26 And Joktan begat Almodad, and Sheleph, and Hazarmaveth, and Jerah,
Gen 11:10 These
are the generations of Shem: Shem
was an hundred years old, and begat Arphaxad two years after the flood:
Gen 11:11 And Shem lived after he begat Arphaxad five hundred years, and begat sons and daughters.
Gen 11:12 And Arphaxad lived five and thirty years, and begat Salah:
Gen 11:13 And Arphaxad lived after he begat Salah four hundred and three years, and begat sons and daughters.
Gen 11:14 And Salah lived thirty years, and begat Eber:
Gen 11:15 And Salah lived after he begat Eber four hundred and three years, and begat sons and daughters.
Gen 11:16 And Eber lived four and thirty years, and begat Peleg:
Gen 11:17 And Eber lived after he begat Peleg four hundred and thirty years, and begat sons and daughters.
Gen 11:18 And Peleg lived thirty years, and begat Reu:
Gen 11:19 And Peleg lived after he begat Reu two hundred and nine years, and begat sons and daughters.
Gen 11:20 And Reu lived two and thirty years, and begat Serug:
Gen 11:21 And Reu lived after he begat Serug two hundred and seven years, and begat sons and daughters.
Gen 11:22 And Serug lived thirty years, and begat Nahor:
Gen 11:23 And Serug lived after he begat Nahor two hundred years, and begat sons and daughters.
Gen 11:24 And Nahor lived nine and twenty years, and begat Terah:
Gen 11:25 And Nahor lived after he begat Terah an hundred and nineteen years, and begat sons and daughters.
Gen 11:26 And Terah lived seventy years, and begat Abram, Nahor, and Haran.
Gen 11:27 Now these
are the generations of Terah: Terah begat Abram, Nahor, and Haran; and Haran begat Lot.
Gen 22:23 And Bethuel begat Rebekah: these eight Milcah did bear to Nahor, Abraham's brother.
Gen 25:3 And Jokshan begat Sheba, and Dedan. And the sons of Dedan were Asshurim, and Letushim, and Leummim.
Gen 25:19 And these
are the generations of Isaac, Abraham's son: Abraham begat Isaac: