1 Nephi 14:2
And harden not their hearts against the Lamb of God,
they shall be numbered among the seed of thy father;
yea, they shall be numbered among the house of Israel;
and they shall be a blessed people upon the promised land forever;
they shall be no more brought down into captivity;
and the house of Israel shall no more be confounded.
And harden not their hearts against the Lamb of God,
and - 446 occurrences in 145 verses - 1 Nephi 10:1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 21, 22, 11:1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 12:1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 13:1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 32, 34, 35, 36, 37, 38, 39, 40, 41, 42, 14:1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30
and harden - 2 occurrences in 2 verses - 1 Nephi 13:27, 14:2