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;

singing - 2 occurrences in 2 verses - 1 Nephi 20:20,   21:13