Charles Ellicott Commentary Exodus 33:12

"And Moses said unto Jehovah, See, thou sayest unto me, Bring up this people: and thou hast not let me know whom thou wilt send with me. Yet thou hast said, I know thee by name, and thou hast also found favor in my sight." — Exodus 33:12 (ASV)

You have not let me know whom you will send. —Moses finds the promises of Exodus 32:34; Exodus 33:2 ambiguous. What is meant by “my angel” and “an angel”? Is it the “Angel” of Exodus 23:20-23, or not? If not, who is it?

I know you by name. —God had shown this knowledge when He called on Moses out of the burning bush (Exodus 3:4), and again, probably, when he called to him out of the midst of the cloud (Exodus 24:16); but the exact phrase had not been used previously. It implies a very high degree of Divine favor. God “knows by name” only those whom He greatly regards. (See Note on Exodus 31:2.)