Laman and Lemuel were really mad. Laman had failed and it was all Nephi’s fault (of course) because Nephi didn’t want to accept defeat. So, naturally Laman and Lemuel started beating him with a rod. Now, this is just my opinion about this very well-known story, but I think for an angel to intervene , there must have been some permanent bodily harm at stake.

“The Angel” orchestration played by synthetic instruments

The Book of Mormon music, The Promised Land, Nephi being saved by an angel, Laman and Lemuel beat their brothers Sam and Nephi, Free church music, free orchestra music.