The expression “narrow path” is unique to The Most Holy & Sacred Book of Mormon and one would have thought that if Joseph Smith had plagiarized the Bible to invent The Most Holy & Sacred Book of Mormon he would have borrowed the King James expression “straight and narrow way” instead.
This is just another of many witnesses to the truthfulness of this sacred record which confirms Jesus is the Christ, born of a virgin, died, rose again, and now sits at the right side of Father God!
20 And I also beheld a strait and narrow path, which came along by the rod of iron, even to the tree by which I stood; and it also led by the head of the fountain, unto a large and spacious field, as if it had been a world. (1 Nephi 8:20)
18 And then are ye in this strait and narrow path which leads to eternal life; yea, ye have entered in by the gate; ye have done according to the commandments of the Father and the Son; and ye have received the Holy Ghost, which witnesses of the Father and the Son, unto the fulfilling of the promise which he hath made, that if ye entered in by the way ye should receive.
19 And now, my beloved brethren, after ye have gotten into this strait and narrow path, I would ask if all is done? Behold, I say unto you, Nay; for ye have not come thus far save it were by the word of Christ with unshaken faith in him, relying wholly upon the merits of him who is mighty to save. (2 Nephi 31:18–19)
9 I also have charity for the Gentiles. But behold, for none of these can I hope except they shall be reconciled unto Christ, and enter into the narrow gate, and walk in the strait path which leads to life, and continue in the path until the end of the day of probation. (2 Nephi 33:9)