Genesis 11:7

Go to, let us go down and there confound their language, that they may not understand one another's speech. The Lord first sets forth the situation as He found it: Behold, one people they are, one connection, one association, one community, and one speech they all have. These two factors made the people strong in the pursuit of a common interest. What they had begun to do they would work for with all possible energy; and nothing would be restrained, held back, from them. The result would be the eventual destruction of true freedom, of personal life, and of the plans which God had concerning the Messiah. So God confounded their language, confused their speech, the miracle consisting in an inward process by which the old association of ideas connected with words was taken away, and new and utterly different modes of expression were immediately implanted. The confusion was so complete that the people could no longer understand one another, and all working together was excluded.