Genesis 11:6-9

6And the Lord said, "Behold, they are one people, and they have all one language, and this is only the beginning of what they will do. And nothing that they propose to do will now be impossible for them.

7Come, let us go down and there confuse their language, so that they may not understand one another's speech."

8So the Lord dispersed them from there over the face of all the earth, and they left off building the city.

9Therefore its name was called Babel, because there the Lord confused the language of all the earth. And from there the Lord dispersed them over the face of all the earth.