Genesis 11:2-4

It came about as they journeyed east, that they found a plain in the land of Shinar and settled there. They said to one another, “Come, let us make bricks and burn them thoroughly.” And they used brick for stone, and they used tar for mortar. They said, “Come, let us build for ourselves a city, and a tower whose top will reach into heaven, and let us make for ourselves a name, otherwise we will be scattered abroad over the face of the whole earth.”