That's why we exist as a church, but why do we sell shirts and things? If we're living out our faith on a daily basis, that means that we are repping God in everything we do. Why wear a normal shirt when you can wear something that leads you right into the Gospel, and inviting people into a life changing community that will love them unconditionally?
Oh yeah, and we don't make a single cent from this stuff, so buy knowing that every bit goes into investing in the people you'll share Jesus with.