1 Nephi 11:7

And behold this thing shall be given unto thee for a sign,

that after thou hast beheld the tree

which bore the fruit which thy father tasted,

thou shalt also behold a man descending out of heaven,

and him shall ye witness;

and after ye have witnessed him

ye shall bear record that it is the Son of God.

And behold this thing shall be given unto thee for a sign,

this - 15 occurrences in 12 verses - 1 Nephi 10:5, 6, 8, 15,   11:7,   12:18,   13:6, 8, 27, 34,   14:4, 24

this thing - 2 occurrences in 2 verses - 1 Nephi 10:8,   11:7