The Book of Mormon Helps the Work of the Lord in Our Day
Mormon 8:21–22
21 And he that shall breathe out wrath and strifes against the work of the Lord, and against the covenant people of the Lord who are the house of Israel, and shall say: We will destroy the work of the Lord, and the Lord will not remember his covenant which he hath made unto the house of Israel—the same is in danger to be hewn down and cast into the fire;
22 For the eternal purposes of the Lord shall roll on, until all his promises shall be fulfilled.
The Prophet Joseph Smith said:
“No unhallowed hand can stop the work from progressing; persecutions may rage, mobs may combine, armies may assemble, calumny may defame, but the truth of God will go forth boldly, nobly, and independent, till it has penetrated every continent, visited every clime, swept every country, and sounded in every ear, till the purposes of God shall be accomplished, and the Great Jehovah shall say the work is done.”
(Teachings of Presidents of the Church: Joseph Smith [2007], 142.)