20 And the Lord will surely prepare a way for his people, unto
the fulfilling of the words of Moses, which he spake, saying: A
prophet shall the Lord your God raise up unto you, like unto me;
him shall ye hear in all things whatsoever he shall say unto you.

And it shall come to pass that all those who will not hear that
prophet shall be cut off from among the people.

1 Nephi 22:21
21 And now I, Nephi, declare unto you, that this prophet of whom
Moses spake was the Holy One of Israel; wherefore, he shall
execute judgment in righteousness.

1 Nephi 22:22
22 And the righteous need not fear, for they are those who shall
not be confounded. But it is the kingdom of the devil, which
shall be built up among the children of men, which kingdom is
established among them which are in the flesh--

1 Nephi 22:23
23 For the time speedily shall come that all churches which are
built up to get gain, and all those who are built up to get power
over the flesh, and those who are built up to become popular in
the eyes of the world, and those who seek the lusts of the flesh
and the things of the world, and to do all manner of iniquity;
yea, in fine, all those who belong to the kingdom of the devil
are they who need fear, and tremble, and quake; they are those
who must be brought low in the dust; they are those who must be
consumed as stubble; and this is according to the words of the
prophet.