Genesis 11:3-4

11:3 Then they said to one another, “Come, let’s make bricks and bake them thoroughly.” (They had brick instead of stone and tar instead of mortar.) 11:4 Then they said, “Come, let’s build ourselves a city and a tower with its top in the heavens so that we may make a name for ourselves. Otherwise we will be scattered across the face of the entire earth.”

Genesis 11:7

11:7 Come, let’s go down and confuse their language so they won’t be able to understand each other.”