Sent the hornet — When they were actually engaged in battle with the Canaanites. These dreadful swarms which first appeared in their war with Sihon and Og, tormented them with their stings and terrified them with their noise, so that they became an easy prey to Israel. God had promised to do this for them, Exodus 23:27-28, and here Joshua observes the fulfilling the promise.
Related Commentaries of Joshua 24:12
Joshua 24:12
12 And I sent the hornet before you, which drave them out from before you, even the two kings of the Amorites; but not with thy sword, nor with thy bow.