See also Gross
Saints have sinned very grievous sins, D&C 95:3, 6, 10 (101:98).
Saints to be chastened with grievous chastisement, D&C 103:4.
those who break covenant shall be cursed with grievous curse, D&C 104:4.
burdens of Saints are grievous, D&C 109:48.
famine becomes grievous, Abr. 2:21.