Commentary for Genesis 11:1

שפה אחת ONE LANGUAGE — The Holy Tongue (Hebrew) (Midrash Tanchuma, Noach 19).

ויהי כל הארץ שפה אחת. The whole earth had a single language. We must give some thought to the intent of the generation that built the Tower. What exactly did they mean to achieve by means of a city and a tower? If all they had in mind was to give expression to some aspect of heresy, how was that expressed by their building plans? If indeed their heresy was of a serious nature, their punishment, i.e. scattering them over the globe, seems an inadequate punishment. How would that punishment cure them of their heresy? The words ועתה לא יבצר מהם כל אשר יזמו לעשות, "Must not everything they are planning to do be withheld from them now?," are difficult. This line poses severe problems for a believer. Why did they say: "we will build a city for ourselves?" Who else was there to build a city for? Besides, did not G'd want mankind to construct a civilised universe? Surely He did not want a bunch of cave-dwellers?

ויהי כל הארץ, the Torah does not mean the earth, of course, but all the people on earth.