Marketing my Christian Owned & Operated Business

Owned, Operated, or just do your business? 

This morning, while on my way to work, a local pawn shop was running an advertisement on the radio. They made it known that they were a Christian owned and operated business, yet later told about how they had the lowest interest rates around. Now while I agree you can be a Christian and try to operate your business on Christian morals and principles; I have to wonder if charging interest fits that criteria. One of the very things God warned the Jews about when giving loans was about not charging interest because you could, in the end, take ownership of the one last thing the loan taker has. A contradiction of sorts...

This brings me to a bigger question; in the end is it better to just advertise yourself as Christian owned, operated, or just run your business without making it known either way? Does God bless your business more because you have a "Gods Ten Commandments" sign in your parking lot? Am I not spreading the gospel because I don't have an ICTHUS fish on my company van? Will one less person go to Heaven because I don't have some corny phrase on my marquee asking people rhetorically if they think it's hot here?

We all know that actions speak louder then words, and I believe that when you simply do the right thing without having to tell people you do so business operation will run better for having done so. Perhaps God is more pleased with us when companies are ran right instead of running ad time to tell potential customers of how  we do it.