1 Nephi 21:13

Sing, O heavens; and be joyful, O earth;

for the feet of those who are in the east shall be established;

and break forth into singing, O mountains;

for they shall be smitten no more;

for the Lord hath comforted his people,

and will have mercy upon his afflicted.

and break forth into singing, O mountains;

O - 13 occurrences in 9 verses - 1 Nephi 20:1, 12, 18,   21:1, 3, 8, 12, 13, 15