Contradiction with Genesis 11:1
Genesis 10:5 mentions the division of languages among the isles of the Gentiles, while Genesis 11:1 states that the whole earth had one language and one speech.
Genesis 11:1: And the whole earth was of one language, and of one speech. [language: Heb. lip.] [speech: Heb. words]
Paradox #1
The contradiction or conflict in Genesis 10:5 may involve the historical timeline of human migration and the development of nations. This verse suggests the existence of distinct nations and languages soon after the flood, which some historians and archaeologists argue is inconsistent with evidence that suggests a more gradual development of distinct cultures and languages over a longer period.