Q. Gen 10 describes all the descendants of Ham, Sham, and Japheth. It says in several places that they each have their own language – v5, 20, 31. Why does Gen 11:1 say, “Now the whole world had one language and a common speech”?
A. First let us look at the verses you quoted:
- Gen 10:5 From these the coastlands of the nations were separated into their lands, every one according to his language, according to their families, into their nations.
- Gen 10:20 These are the sons of Ham, according to their families, according to their languages, by their lands, by their nations.
- Gen 10:31 These are the sons of Shem, according to their families, according to their languages, by their lands, according to their nations.
- Gen 11:1 Now the whole earth used the same language and the same words.
On the surface, Gen 10 states that nations of the sons of Noah already had their own languages. This is followed by Gen 11 which states that the whole earth used the same language. So apparently there is a contradiction. Is the author of Genesis confused?
No, a superficial contradiction exists only if Gen 11 follows Gen 10 chronologically, but such is not the case. Gen 10 tells of how the nations from the sons of Noah were separated according to their languages by their lands.
- Gen 10:32 These are the families of the sons of Noah, according to their genealogies, by their nations; and out of these, the nations were separated on the earth after the flood.
Gen 11: 1-9 then retraces the history to an earlier time to explain why the nations were separated in the first place, by God confusing their one language to become many languages. This literary device is similar to a flashback in a movie to fill in explanatory details.
Notice that the sons of Shem are already given in Gen 10:21-30, in particular, the line through Arpachshad (v 24-29). However, this Arpachshad line is given again in Gen 11, starting in v 10 but this time extending further to Abram in v 26. Why the repetition? This reiteration is to change the focus from the many nations descended through Shem to just one of his descendants – Abram, whom God chose to be the father of the nation Israel.
Similarly, the fact of the separation into many nations and languages is given first in Gen 10, then the reason for the separation is given in Gen 11, followed by lowering the microscope from the many generations of Shem to just one, Abram, to continue the salvation history. There is no contradiction.