Hands Holier Than Lips?

So I was listening to my Christian radio station down here yesterday, when an ad for a business impact partner came on the radio. The tagline for this business partner said that they believe the following:

"Hands that serve are holier than lips that pray."

For some reason, that caught me the wrong way. Putting some thought into it hasn't really led to anything conclusive on my part. Any thoughts? Why would this be true? Why would it be false? Is one better than the other? Or does it all come down to just motive?