The phrase, wickedness never was happiness (Alma 41:10), has many applications. From it, we learn that when the wicked are killed and the devil laughs, he is not really happy. Though his angels rejoice, they have no lasting joy. His mocking laughter signifies not his happiness but that another has been made miserable like unto himself (2 Nephi 2:27). The destruction of another soul is as good as it gets for Satan’s club of the condemned.
Although the devil and his angels often visit the large and spacious building and appear to be enjoying themselves as they mock and point fingers, the truth is that they have been consigned to an existence without genuine laughter or eternal rejoicing. In the words of Nephi, because he had fallen from heaven…[he became] miserable forever (2 Nephi 2:18). Satan’s misery will last forever, but his miserable laughter will not. The Lord has promised, they that have laughed shall see their folly. And calamity shall cover the mocker, and the scorner shall be consumed (DC 45:49-50). Then it will be He that sitteth in the heavens [that] shall laugh (Ps 2:4).