TT #82 · Parashas Noach · Seventh Aliyah · Passuk 11:7
“Come, let Us go down and confuse their language there…”
Torah Temimah points to R’ Yochanan (Sanhedrin 38b) — reply to the Sadducees.
E-Daf image — Sanhedrin 38b (size=3)
English: “Let Us go down” — R’ Yochanan said: Wherever the Sadducees attacked, their refutation is at their side… what is written afterward? “And Hashem went down” (singular).
Custom (answer to those who read plurality into the divine speech).
Although the invitation is phrased in the plural, the actual descent is described in the singular, refuting any claim of multiple deities.