Moroni 7:15

For behold my brethern, it is given unto you to judge, that ye may know good from evil ...

Moroni 7:12& 13

Wherefore, all things which are good cometh of God; and that which is evil cometh of the devil; ... But behold, that which is of God inviteth and enticeth to do good continually; wherefore, every thing which inviteth and enticeth to do good, and to love God; and to serve him, is inspired of God.

James E Faust

A grateful heart is a beginning of greatness. It is an expression of humility. it is a foundation for the development of such virtues as prayer, faith, courage,  contentment, happiness, love , and well-being. 

1 Corinthians 14:33

. . .For God is not the author of confusion, but of peace. . .

Moroni 7: 16

For behold, the Spirit of Christ is given to every man, (woman and child) that he may know good from evil....

Mormon 7:3

Know ye that ye must come unto repentance, or ye cannot be saved.

Mormon 9:12

Because of the fall of man came Jesus Christ, even the Father and the Son; and because of Jesus Christ came the redemption of men.