Let us, i.e. the blessed Trinity. See Genesis 1:26. Confound their language, by making them forget their former language, and by putting into their minds several languages; not a distinct language into each person, but into each family, or rather into each nation; that thereby they may be disenabled from that mutual commerce which was altogether necessary for the carrying on of that work.
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.