Genesis 11:9

Therefore is the name of it called Babel [Confusion]; because the LORD did there confound [confuse] the language of all the earth: and from thence did the LORD scatter them abroad upon [over] the face of all the earth.

Genesis 11:7

Go to [come], let us go down, and there confound their language, that they may
not understand one another's speech.

Genesis 11:6

And the LORD said, Behold, the people [is] one, and they have all one language; and this they begin to do: and now nothing will be restrained from them, which they have imagined [proposed] to do.

Genesis 11:1

And the whole earth was of one language, and of one speech.