1 Nephi 15: 23-25

23And they said unto me: What meaneth the ^arod of iron which our father saw, that led to the tree?

 24And I said unto them that it was the ^aword of God; and whoso would hearken unto the word of God, and would ^bhold fast unto it, they would never perish; neither could the ^ctemptations and the fiery ^ddarts of the ^eadversary overpower them unto blindness, to lead them away to destruction.

25Wherefore, I, Nephi, did exhort them to give ^aheed unto the word of the Lord; yea, I did exhort them with all the energies of my soul, and with all the ^bfaculty which I possessed, that they would give heed to the word of God and remember to keep his commandments always in all things.