John Gill 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)

And I will send an angel before you
Not the angel before promised, (Exodus 23:20) the Angel of his presence, the eternal Word and Son of God, but a created angel; and so Aben Ezra observes, he does not say the Angel that was known, that his name was in him; though even this was to be looked upon as a favour, and showed that he has not utterly cast them off:

and I will drive out the Canaanite, the Amorite, and the Hittite,
the Perizzite, the Hivite, and the Jebusite ;
who were now the inhabitants of the land, and these he promises drive out, to make way for their possession of it; and that "by his hand", as the Targum of Jonathan interprets it, by the hand of the angel. Only six nations are mentioned, though there were seven; the Girgashite is omitted, but added in the Septuagint version.