This is a picture from 1912 where some poor man is testing a rugby helmet. You can theorize all you want about the best places to put padding, straps, and protection. You can use dummies and simulations. But in the end, when you put on a helmet, the only true test that matters is when you have a collision that requires you to depend on it for your safety and survival.
I think faith works in a similar way. I'm not opposed to hearing a variety of ideas about God, the universe, and humanity's place in all of it. As you know, there are numerous competing ideas in the world about where we came from, what is morally good, and what is a worthy use of our time. But the only way to really know how much you can depend on the object of your faith is when your faith has been tested by some collision with reality. It is not the amount of faith we have that makes us safe and secure, but rather the one in whom we put our faith. It doesn't matter whether you have a beautiful, shiny helmet of a trendy brand or an ugly, colorless helmet with no label. What matters is how well your helmet actually protects you when you need it.
Many people are absolutely convinced that what is trendy must surely be what is best, and they will race ahead without ever giving thought to what might happen when in their life they hit a wall. Though we would never actively seek difficulties, James says that as Christians, we should be encouraged when we face difficulties, because the outcome of our tested faith is that we'll learn that God is solid and reliable, and because he's been reliable one time, we know we can trust him even more the next time (James 1:2-4). The good thing about collisions is that they get past the exterior appearances and force us to grapple with whether or not we are building our life on something solid.
Perhaps we are also wise to notice the three men in the back of this photo, conveniently not beating their heads against the wall, but witnessing the other man's collision. If you want to know the strength of a belief system, watch closely those who have held on to it through difficult situations. Think of all the cancer survivors we have at church. Think of those who had formerly been incarcerated or who have recovered from addictions. Think of all those who have lost spouses and even children, yet continue to worship among us each week. You may not have experienced the toughest challenges of your life yet, but you can learn a lot from those who have. Was the help that God provides enough to carry them through? Your collisions will come, sooner or later. Be thoughtful about how you are preparing yourself, and be sure you're putting your hope in something--or someone--on whom you can depend.