Joseph Smith
“In obedience there is joy and peace unspotted…and as God has designed our happiness—and the happiness of all His creatures, he never has—He never will institute an ordinance or give a commandment to His people that is not calculated in its nature to promote that happiness which He has designed, and which will not end in the greatest amount of good and glory to those who become the recipients of his laws and ordinances.” (Teachings, p. 256-7 as taken from Latter-day Commentary on the Book of Mormon compiled by K. Douglas Bassett, p. 345)