Pay careful attention to him and obey his voice; do not rebel against him, for he will not pardon your transgression, for my name is in him.
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
For mine Angel shall go before thee,.... The same as before described: and bring thee in unto the Amorite, and the Hittite, and the Perizzite, and the Canaanite, and the Hivite, and the Jebusite; six nations are only mentioned, though there were seven; the Girgashites are omitted, though added in the Septuagint version; and this omission of them might be, either because they were swallowed...
my name is in him--This angel is frequently called Jehovah and Elohim, that is, God.