Question: What does it mean to be “past feeling?”
Answer: Elder Neal A. Maxwell said, “In Ephesians, Paul links ‘past feeling’ to lasciviousness that apparently so sated its victims that they sought ‘uncleanness with greediness.’
“Moroni used the same two words to describe a decaying society which was ‘without civilization,’ ‘without order and without mercy,’ and in which people had ‘lost their love, one toward another.’
“Nephi used the same concept in his earlier lamentation about his brothers’ inability to heed the urgings of the Spirit because they were ‘past feeling.’
“The common thread is obvious: the inevitable dulling of our capacity to feel renders us impervious to conscience, to the needs of others, and to insights both intellectual and spiritual.”
“And now, my son, I dwell no longer upon this horrible scene. Behold, thou knowest the wickedness of this people; thou knowest that they are without principle, and past feeling;...” (Moroni 9:20).
Source: 400 Questions and Answers About the Book of Mormon by Susan Easton Black, p. 212.