I will send my fear before thee, and will destroy all the people to whom thou shalt come, and I will make all thine enemies turn their backs unto thee.
27. I will send my fear before thee. It is very clear from these words that God’s fatherly love towards the people is magnified, to prepare their minds to submit themselves to the yoke of the Law. Therefore their reward, if they should keep the Law, is not so much set before them here, as shame is denounced upon them if they should be ungrateful...
God sends His angel, likely the Son of God Himself, to guide Israel through wilderness and enemy country alike. He demands obedience to this messenger; your part is not to murmur or test Him, but to keep His precepts and hear His voice, and He will be enemy to your enemies and bring you safely to the land prepared.
AI summary
Commenting on Exodus 23:20-33
I will not drive them out from before thee in one year,.... This is observed before hand, lest the Israelites should be discouraged, and fear they should never be rid of them; and it was so ordered in Providence for the following reason: lest the land become desolate; there being not a sufficient number of Israelites to replace in their stead, to repeople the land...