Behold, I send an Angel— This might as well be rendered, the Angel or Messenger. Houbigant, after the Samaritan, the LXX, and the Vulgate, reads my Angel, as in Exodus 23:23. Who he was, appears from the whole subsequent history; namely, that same Divine Person who appeared to Moses in the bush, and who has been already so often spoken of. The phrase, Exodus 23:21 for my Name is in him, signifies, he is invested with my power and authority; or rather, my power and authority is inherent in him: for the Hebrew is emphatical: because my Name, בקרבו bekirbo, in interiori ejus, is in the inmost part of him: a phrase, which could be applied to no created angel; as all which is here said of him, clearly proves. See John 10:38. None could pardon sins (Exodus 23:21.) but God alone: see Mark 2:7.
Related Commentaries of Exodus 23:20
Exodus 23:20
20 Behold, I send an Angel before thee, to keep thee in the way, and to bring thee into the place which I have prepared.