In addition to creating SmartArt, and including a bunch of some great variants out of the box, Microsoft also created a way for individuals and developers to create their own custom SmartArt Layout files - these new SmartArt Layouts had the file extension, GLOX -- and could be dropped into a designated folder -- and that would result in additional SmartArt graphics being available to you.
Free Christian PowerPoint Backgrounds and Templates
This site provides tons of free Christian PowerPoint backgrounds and templates that you can use almost anywhere -- you will find special Christian themes for use in worship and prayer presentations, as well as many general use designs. There's also tons of designs based on Christian customs and religious symbols.
Feel free to use all of these in church and ministry projection systems -- you can also use them as part of communion meditations, song and hymn lyric backgrounds, sermon backgrounds/backdrops and anywhere else. Every single design was created so that you can create better presentations.
Here are some links to individual Christian PowerPoint template download pages -- in addition, you can directly browse all designs by category.