Exodus 23:28

הצרעה THE HORNETS — This is a kind of insect which wounded their eyes and injected poison in them, so that they died. The hornets did not cross the Jordan and the Hittite and the Canaanite whom Scripture mentions here as being driven out by them were the inhabitants of the land of Sichon and Og (on the east side of the Jordan). It is for this reason that Scripture enumerates here of all the seven nations that Israel fought against when entering Palestine only these two (cf. Joshua 24:12, where the text expressly states that the peoples driven out by the hornets were those of שני מלכי האמרי, “of the two kings of the Amorites” who are identical with Sihon and Og). But the Hivites lived on the other bank of the Jordan and somewhat beyond it and yet it states here that the hornets would drive them out! They were indeed driven out by the hornets, for our Rabbis have explained in Treatise Sotah 36a that the hornets placed themselves on the east bank of the Jordan and from there cast the poison against them.

וְשָׁלַחְתִּ֥י אֶת־הַצִּרְעָ֖ה לְפָנֶ֑יךָ וְגֵרְשָׁ֗ה אֶת־הַחִוִּ֧י אֶת־הַֽכְּנַעֲנִ֛י וְאֶת־הַחִתִּ֖י מִלְּפָנֶֽיךָ׃

And I will send hornets before thee, which shall drive out the Ḥivvi, the Kena῾ani, and the Ḥitti, from before thee.