Genesis 11:5

3And 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.

4And 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.

5And the LORD came down to see the city and the tower, which the children of men builded.

6And 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 to do.

7Go to, let us go down, and there confound their language, that they may not understand one another’s speech.