Hi @calebsurface
The best way to do it would be creating custom post type for Sermons, Series, and Speaker; and then use the Post Object field to get them. To create a custom post type, you can use a plugin like Custom Post Type UI.
You can also create a custom query for the post object field. This page should give you more idea about it: https://www.advancedcustomfields.com/resources/acf-fields-post_object-query/.
I hope this helps.
