It's not always feasible for non-profit organizations to order custom website designs. Churches and other charities would benefit the most from purchasing a premium theme and using this as a framework for a new website layout. And WordPress is definitely one of the easiest systems to use.
If you're working with this type of client or even need a site for your own project, these WP themes are perfect for any church or nonprofit. They include many customizable features and offer the highest-quality design out of any other themes. Take a look at this collection and see if anything strikes your interest.