Google will penalize you for Keyword Stuffing. It also depends on what you consider KW Stuffing. How many keywords are we talking about here? I've worked on a clients site and saw a lot of keyword spamming. I took out probably 95% of the keywords and saw his rankings go from page 47 to page 3 over night and held. Then dug deeper and got him to the bottom of page 1. My only recommendation is to tell you to stick to Googles policy and not keyword stuff.
ROFLMAO Surely you jest? The mere fact that you even know to call it stuffing tells me you "should" know better. Or maybe not! LOL and the first paragraph: Each of your pages should be targeting a single (and different) keyword phrase (maybe 2 or 3 if they are almost identical)... I would suggest learning some fundamental SEO techniques that don't involve using cheap tricks like this to try to game the system and possibly getting your client's sites penalized. You actually market yourself as an SEO company for christian sites? That is a SIN in itself. ROFL There is a LOT more to SEO than what you're doing... Personally, it's people like this who know little but sell their services as if they actually "get it" that give the profession a bad name.
In long run this may not work all the time. You may be lucky. But let's follow some standard and quality
It's a lot harder to make 1 page rank for 10 keyword phrases than it is to make 10 pages each rank for 1 keyword phrase. With each new page, you get a new <title>, <h1>, <h2>s, content, etc. which can ALL be focused on the main keyword phrase you want that page to rank for. When you want to expand the number of keyword phrases you rank for and get more traffic, simply add new pages that target keyword phrases not already being targeted by other pages on your site... It's really not that difficult. This is why when telling people how to learn about search engine optimization, I tell them to steer clear of forums like these for the first 6 months or a year. They are better off reading books, attending a search engine marketing conference like Pubcon, and following reputable SEOs online like Danny Sullivan, Aaron Wall, and Rand Fishkin until you have a firm grasp on the fundamentals. There is a LOT of misinformation circulated on forums by people who know very little but sell themselves as experts. If you can't tell who knows their stuff and who doesn't, you end up following a lot of bad advice and potentially getting yourself in hot water w/ Google. The link above is from my blog. Click around my site and read the posts. You won't see me spamming keywords in titles and first paragraphs... Look at the keywords in the <title> of each page and search Google. You'll see almost all of my posts end up and stay on page 1 or two... and I do almost NO link building other than an occasional ezine article, and referencing my posts to help answer questions a couple times per day on forums like these. If you are good at keyword analysis and follow sound, fundamental on-page and on-site optimization methods... your pages can rank instantly and stay there w/ almost no links from external sites. If you go the extra mile and build links you can dominate...