“Neither Shall Ye Revile Against Them”

Joseph F. McConkie, Robert L. Millet
To revile is to despise, to regard as vile, or to physically or verbally abuse, all of which are alien to the Spirit of God. we have been expressly commanded to “[revile] not against revilers” (D&C 19:30; compare Jude 1:9), [or by so doing we partake of the spirit of darkness.

Doctrinal Commentary on the Book of Mormon, Vol. 2