Nephi teaches that one of the lies of Satan is complacency—that we would be content with the state of affairs in Zion, saying all is well in Zion, yea, Zion prospereth. Satan understands that as soon as we believe this, we have let our guard down and practically opened the door for him to cheat our souls and lead us carefully down to hell. We should never be content with our own faithfulness or the state of affairs in Zion. Both can be improved and our efforts should be unceasingly aimed at improvement. When they are not, Satan smiles and is let in the door. Therefore, wo be unto him that is at ease in Zion! Wo be unto him that crieth: All is well! (v. 24-5)
Spencer W. Kimball
“We have discussed elsewhere that other class of people who are basically unrepentant because they are not ’doing the commandments.’ They are Church members who are steeped in lethargy. They neither drink nor commit the sexual sins. They do not gamble nor rob nor kill. They are good citizens and splendid neighbors, but spiritually speaking they seem to be in a long, deep sleep. They are doing nothing seriously wrong except in their failures to do the right things to earn their exaltation.” (Miracle of Forgiveness, pp. 211-2 as taken from Latter-day Commentary on the Book of Mormon compiled by K. Douglas Bassett, p. 160)
Joseph Fielding Smith
“It is not possible, as some of us have supposed, for us to slip along easily through this life, keeping the commandments of the Lord indifferently-accepting some of the doctrines and not others, and indulging our appetites or desires, and, because we consider them little things, failing to understand and comprehend our duty to them-and then expect to receive a fulness of glory in the kingdom of God.” (Doctrines of Salvation, p. 14 as taken from Latter-day Commentary on the Book of Mormon compiled by K. Douglas Bassett, p. 160)