May we not spiritualize this passage, and say, when the word of God is delivered by his sent servants, it is in fact God himself speaking in the word, and by the word. So Paul thought, 1 Thessalonians 2:13.
Related Commentaries of Exodus 16:10
Exodus 16:10
10 And it came to pass, as Aaron spake unto the whole congregation of the children of Israel, that they looked toward the wilderness, and, behold, the glory of the LORD appeared in the cloud.