Bereshis 11:3-5

Orthodox Jewish Bible

³ And they said one to another, Come, let us make brick, and bake them thoroughly. And they had brick for even (stone), and bitumen had they for mortar.

⁴ And they said, Come, let us build us an Ir and a Migdal, whose rosh (top) may reach unto Shomayim; and let us make us a shem, otherwise we shall be scattered abroad upon the face of kol HaAretz.

⁵ And Hashem came down to see the Ir and the Migdal, which Bnei HaAdam built.