1 Nephi 15:4

And now I, Nephi, was grieved because of the hardness of their hearts,

and also, because of the things which I had seen,

and knew they must unavoidably come to pass

because of the great wickedness of the children of men.

and also, because of the things which I had seen,

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 I - 4 occurrences in 3 verses - 1 Nephi 15:4, 25, 35