Genesis 11:1-3

Young's Literal Translation

11 And the whole earth is of one pronunciation, and of the same words,

² and it cometh to pass, in their journeying from the east, that they find a valley in the land of Shinar, and dwell there;

³ and they say each one to his neighbour, `Give help, let us make bricks, and burn [them] thoroughly:' and the brick is to them for stone, and the bitumen hath been to them for mortar.