We can help the poor by living the law of the fast and contributing a generous fast offering.

Doctrine and Covenants 81:5

5 . . . [S]uccor the weak, lift up the hands which hang down, and strengthen the feeble knees.

Elder Joseph B. Wirthlin said:

“Some look at the overwhelming need in the world and think, ‘What can I do that could possibly make a difference?’

“I will tell you plainly one thing you can do. You can live the law of the fast and contribute a generous fast offering.

“Fast offerings are used for one purpose only: to bless the lives of those in need. Every dollar given to the bishop as a fast offering goes to assist the poor. When donations exceed local needs, they are passed along to fulfill the needs elsewhere.”

(“The Law of the Fast,” Ensign, May 2001, 74.)