"Walls of the prison"

1. Alma 14: 27
     27 And it came to pass that so great was their fear that they fell to the earth, and did not obtain the outer door of the prison; and the earth shook mightily, and the walls of the prison were rent in twain, so that they fell to the earth; and the chief judge, and the lawyers, and priests, and teachers, who smote upon Alma and Amulek, were slain by the fall thereof.
2. Hel. 5: 27, 31, 44
     27 And behold, when they had said these words, the earth shook exceedingly, and the walls of the prison did shake as if they were about to tumble to the earth; but behold, they did not fall. And behold, they that were in the prison were Lamanites and Nephites who were dissenters.
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     31 And notwithstanding the mildness of the voice, behold the earth shook exceedingly, and the walls of the prison trembled again, as if it were about to tumble to the earth; and behold the cloud of darkness, which had overshadowed them, did not disperse—
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     44 And Nephi and Lehi were in the midst of them; yea, they were encircled about; yea, they were as if in the midst of a flaming fire, yet it did harm them not, neither did it take hold upon the walls of the prison; and they were filled with that joy which is unspeakable and full of glory.