11 And as I said unto you, as they were going about rebelling against God, behold, the angel of the Lord appeared unto them; and he descended as it were in a cloud; and he spake as it were with a voice of thunder, which caused the earth to shake upon which they stood;
12 And so great was their astonishment, that they fell to the earth, and understood not the words which he spake unto them.
13 Nevertheless he cried again, saying: Alma, arise and stand forth, for why persecutest thou the church of God? For the Lord hath said: This is my church, and I will establish it; and nothing shall overthrow it, save it is the transgression of my people. (Mosiah 27)
Each of these details is also included in the account Alma gives to his son Helaman:
6 For I went about with the sons of Mosiah, seeking to destroy the church of God; but behold, God sent his holy angel to stop us by the way.
7 And behold, he spake unto us, as it were the voice of thunder, and the whole earth did tremble beneath our feet; and we all fell to the earth, for the fear of the Lord came upon us.
8 But behold, the voice said unto me: Arise. And I arose and stood up, and beheld the angel. (Alma 36)
We also hear this sentiment in Alma's "O that I were an angel" lament:
1 O that I were an angel, and could have the wish of mine heart, that I might go forth and speak with the trump of God, with a voice to shake the earth, and cry repentance unto every people!
2 Yea, I would declare unto every soul, as with the voice of thunder, repentance and the plan of redemption, that they should repent and come unto our God, that there might not be more sorrow upon all the face of the earth. (Alma 29)
In the context of Lehi's plea to his sons to "arise from the dust" in 2 Nephi 1, these verses take on new depth.
This is a plea to make and keep covenants and leave behind our carnal desires. This is what the Holy Spirit prompts each of us to do. Angels speak by the power of the Holy Ghost.
Alma's lament fits in very nicely with the writings of Nephi in 2 Nephi 32:
2 Do ye not remember that I said unto you that after ye had received the Holy Ghost ye could speak with the tongue of angels? And now, how could ye speak with the tongue of angels save it were by the Holy Ghost?
3 Angels speak by the power of the Holy Ghost; wherefore, they speak the words of Christ. Wherefore, I said unto you, feast upon the words of Christ; for behold, the words of Christ will tell you all things what ye should do.
4 Wherefore, now after I have spoken these words, if ye cannot understand them it will be because ye ask not, neither do ye knock; wherefore, ye are not brought into the light, but must perish in the dark.
5 For behold, again I say unto you that if ye will enter in by the way, and receive the Holy Ghost, it will show unto you all things what ye should do.
