Alma 14:28

And Alma and Amulek came forth out of the prison, and they were not hurt; for the Lord had granted unto them power, according to their faith which was in Christ. And they straightway came forth out of the prison; and they were loosed from their bands; and the prison had fallen to the earth, and every soul which was within the walls thereof, save it were Alma and Amulek, were slain; and they straightway came forth into the city.

Alma and Amulek came out of the prison. They were not hurt. The Lord had given them power because of their faith in Christ. They came out of the prison right away. They were free from their ropes. The prison had fallen to the ground. Every person inside the walls died except for Alma and Amulek. They came out into the city right away.

Alma and Amulek walked out of the prison completely unharmed. The Lord had protected them because of their faith in Christ. The prison had collapsed, killing everyone inside except them. They walked straight out into the city.