Go to, let Us go down. This is always in judgment (Compare Genesis 18:21.Exodus 3:8; Exodus 3:8). Here in contrast with Genesis 11:4, to man's "Go to, let us go up". Figure of speech Anthropopatheia, App-6. See Genesis 11:5.
Related Commentaries of Genesis 11:7
Genesis 11:7
7 Go to, let us go down, and there confound their language, that they may not understand one another's speech.