Adam Clarke on Genesis 11:7

Go to - A form of speech which, whatever it might have signified formerly, now means nothing. The Hebrew העה habah signifies come, make preparation, as it were for a journey, the execution of a purpose, etc. Almost all the versions understand the word in this way; the Septuagint have δευτε, the Vulgate venite, both signifying come, or come ye. This makes a very good sense, Come, let its go down, etc. For the meaning of these latter words see Gen 1:26, and Gen 18:21.