1 Nephi 17:43

And now, after all these things,

the time has come that they have become wicked,

yea, nearly unto ripeness;

and I know not but they are at this day about to be destroyed;

for I know that the day must surely come

that they must be destroyed, save a few only,

who shall be led away into captivity.

that they must be destroyed, save a few only,

must - 9 occurrences in 7 verses - 1 Nephi 16:35,   17:3, 25, 43,   18:15,   19:12, 21

must be - 2 occurrences in 2 verses - 1 Nephi 17:3, 43