1 And the whole earth was of one language, and of one speech.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. 7 Go to, let us go down, and there confound their language, that they may not understand one another's speech.

Genesis 11:1,6 & 7