Then they said to one another, "Come, let us make bricks and bake them thoroughly." They had brick for stone, and they had asphalt for mortar.
Genesis 11:3
Surrounding context
11:2 And it came to pass, as they journeyed from the east, that they found a plain in the land of Shinar, and they dwelt there.
11:3 Then they said to one another, "Come, let us make bricks and bake them thoroughly." They had brick for stone, and they had asphalt for mortar.
11:4 And they said, "Come, let us build ourselves a city, and a tower whose top is in the heavens; let us make a name for ourselves, lest we be scattered abroad over the face of the whole earth."