Alma 28: 13-14

13, And thus we see how great the inequality of man is because of sin and transgression, and the power of the devil, which comes by the cunning plans which he hath devised to ensnare the hearts of men.

14. And thus we see the great call of diligence of men to labor in the vineyards of the Lord; and thus we see the great reason of sorrow, and also of rejoicing—sorrow because of death and destruction among men, and joy because of the light of Christ unto life.