400
The wicked people throw Alma and Amulek into prison, while they are in jail what happens to the people that believe in their teachings?
What happens: to the men, the women and children and the scriptures?
Why do Alma and Amulek not stop what is happening to the believers?
The men: were thrown out of the city.
The women, children and scriptures were burned in a fire.
The Lord tells Alma not to stop the fire because the spirits of the people being burned were coming directly to him in Heaven and that the wicked people who were doing this would have to pay for their sins later.