"5 Now these are the circumstances which attended them in their journeyings, for they had many afflictions; they did suffer much, both in body and in mind, such as hunger, thirst and fatigue, and also much labor in the spirit.

...

13 ...they supposed that great was the work which they had undertaken.

14 And assuredly it was great, for they had undertaken to preach the word of God to a wild and a hardened and a ferocious people;..."

- Alma 17: 5, 13, 14

(My favorite chapter in the Book of Mormon!)