JOY: a condition of great happiness coming from righteous living. The purpose of mortal life is for all people to have JOY. A full JOY will come only through Jesus Christ.
And for this cause ye shall have fullness of JOY; and ye shall sit down in the kingdom of my Father; yea, your JOY shall be full, even as the Father hath given me fullness of JOY; and ye shall be even as I am, and I am even as the Father; and the Father and I are one
- 3 Nephi 28:10