Contradiction with Genesis 11:9
This verse implies that the dispersion of people and the confusion of language was God's intervention, contrasting with the unity depicted in Genesis 11:3.
Genesis 11:9: Therefore is the name of it called Babel; because the LORD did there confound the language of all the earth: and from thence did the LORD scatter them abroad upon the face of all the earth. [Babel: that is, Confusion]
Contradiction with Genesis 11:8
Here it states that the people were scattered abroad, contradicting their unified efforts to build in Genesis 11:3.
Genesis 11:8: So the LORD scattered them abroad from thence upon the face of all the earth: and they left off to build the city.
Contradiction with Acts 2:6
The event of Pentecost brought understanding through different languages, contrasting with the confusion and single language in Genesis 11:3.
Acts 2:6: Now when this was noised abroad, the multitude came together, and were confounded, because that every man heard them speak in his own language. [was...: Gr. voice was made confounded: or, troubled in mind]
Contradiction with 1 Corinthians 1:10
Paul calls for unity and no divisions, which opposes the united effort for self-serving intentions in Genesis 11:3.
1 Corinthians 1:10: Now I beseech you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and [that] there be no divisions among you; but [that] ye be perfectly joined together in the same mind and in the same judgment. [divisions: Gr. schisms]