Here is an interesting detail I didn't realize until I studied this chapter in preparation for this post -- King Benjamin's sermon contains a very long passage of words that he was commanded to speak by the angel. Almost all of Mosiah 3 is actually Benjamin quoting the words given to him by the angel.
3 And he said unto me: Awake, and hear the words which I shall tell thee; for behold, I am come to declare unto you the glad tidings of great joy. (Mosiah 3)
From verse 3 all the way to verse 22, Benjamin quotes the angel directly.
23 And now I have spoken the words which the Lord God hath commanded me.
But he isn't actually done.
24 And thus saith the Lord: They shall stand as a bright testimony against this people ...
This second quotation goes on until the end of the chapter:
27 ...Thus hath the Lord commanded me. Amen.