The verses in D&C 103:8-10 contain both a great promise, but also a warning.
We have the ability to be both a light, and act as saviors for the world. But, if we don’t fulfill our responsibilities, we will have lost our purpose and the world will “prevail” against us.
In what ways can you be a light, and act as a savior, for others?
8 But inasmuch as they keep not my commandments, and hearken not to observe all my words, the kingdoms of the world shall prevail against them.
9 For they were set to be a light unto the world, and to be the saviors of men;
10 And inasmuch as they are not the saviors of men, they are as salt that has lost its savor, and is thenceforth good for nothing but to be cast out and trodden under foot of men.
It is easy to despair when we see about us the moorings of society slipping. We must remember, however, that the Lord sent His Saints into the world “to be a light unto the world, and to be the saviors of men.” This is a time when “Zion must arise and put on her beautiful garments.” The contrast between the Church and the world will be increasingly marked in the future, which contrast, we hope, will cause the Church to be more attractive to those in the world who desire to live according to God’s plan for us, His children.
President Ezra Taft Benson