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.
More from Genesis 11
And the whole earth was of one language, and of one speech.
And it came to pass, as they journeyed from the east, that they found a plain in the land of Shinar; and they dwelt
And they said one to another, Go to, let us make brick, and burn them throughly. And they had brick for stone, and slime had they for morter.
And they said, Go to, let us build us a city and a tower, whose top may reach unto heaven; and let us make us a name, lest we be scattered abroad upon the face of the whole earth.
And the LORD came down to see the city and the tower, which the children of men builded.