First off, yes, I am Christian. A furry Christian (Yes it can work for all you doubtful).

This is not the best drawing I have made. I feel like some parts just look weird. I tried drawing the moment David is facing Goliath (With his slingshot, bag of rocks). This is not an actual "reference" of Furry David, I just came up with this while drawing.

If you are interested in reading the actual story from the Bible, it is located in 1 Samuel 17 (The moment of drawing in verses 40 - 42)