Charles Ellicott Commentary Exodus 33:2

"and I will send an angel before thee; and I will drive out the Canaanite, the Amorite, and the Hittite, and the Perizzite, the Hivite, and the Jebusite:" — Exodus 33:2 (ASV)

I will send an angel before thee. —“An angel” is ambiguous. It might designate the Angel of the Covenant, the Angel of God’s presence, as in Exodus 23:20; or it might mean a mere ordinary angel, on a par with those who presided over the destinies of other nations besides the Hebrews (Daniel 10:13; Daniel 10:20). That here the expression is used in this latter sense is made manifest by the declaration of the next verse: “I will not go up in the midst of thee.”