I figured another way. Don’t if it is a correct way. I created different sidebar files, such as: sidebar-brotherhood.php, sidebar-revelations.php. Then I created different page templates like brotherhood.php, so I can choose a certain template when I post a page. In each template page I matched the sidebars accordingly, for example in the brothhood.php I put <?php get_sidebar(‘brotherhood’); ?>.
Is this correct or is the other way (which I don’t get) correct?