1 Nephi 15:3

For he truly spake many great things unto them,

which were hard to be understood,

save a man should inquire of the Lord;

and they being hard in their hearts,

therefore they did not look unto the Lord as they ought.

which were hard to be understood,

which - 26 occurrences in 22 verses - 1 Nephi 15:2, 3, 4, 7, 11, 12, 13, 14, 18, 21, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35

which were - 2 occurrences in 2 verses - 1 Nephi 15:3, 32