I'M HERE TO TELL YOU THAT YOU CAN MAKE AMAZING SOUND FOR YOUR CHURCH WITH THE GEAR YOU ALREADY OWN.
What you need is knowledge and someone to teach you how to listen.
That's it. No big secret. (Actually I take that back, there ARE secrets to great sound, but they don't have to do with your gear... ;-)
So now, I'm going to teach you how to get a great tone out of your pastor's mic, fight feedback, and have an easier time mixing without dropping any of your church's money on any new gear.