Bible Verses About Prisons: Sometimes allowed to be visited by their friends

Now when John heard in the prison the works of the Christ, he sent by his disciples

naked, and ye clothed me; I was sick, and ye visited me; I was in prison, and ye came unto me.

And he gave order to the centurion that he should be kept in charge, and should have indulgence; and not to forbid any of his friends to minister unto him.