1 Nephi 16:20

And it came to pass that Laman and Lemuel and the sons of Ishmael

did begin to murmur exceedingly,

because of their sufferings and afflictions in the wilderness;

and also my father began to murmur against the Lord his God;

yea, and they were all exceedingly sorrowful,

even that they did murmur against the Lord.

because of their sufferings and afflictions in the wilderness;

because - 31 occurrences in 26 verses - 1 Nephi 16:3, 18, 19, 20, 21, 22, 24, 25, 35,   17:5, 6, 19, 22, 41, 47,   18:10, 16, 17, 18, 19,   19:6, 9, 11, 12, 13, 14

because of - 26 occurrences in 22 verses - 1 Nephi 16:3, 18, 19, 20, 21, 24, 25, 35,   17:5, 6, 19, 41, 47,   18:10, 16, 17, 18, 19,   19:6, 9, 11, 12

because of their - 8 occurrences in 8 verses - 1 Nephi 16:19, 20, 35,   17:41,   18:17, 18,   19:9, 11