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.

and they being hard in their hearts,

in - 21 occurrences in 15 verses - 1 Nephi 15:1, 3, 11, 12, 13, 16, 18, 19, 21, 25, 27, 31, 32, 33, 35

in their - 3 occurrences in 3 verses - 1 Nephi 15:3, 32, 33