
In his book "Fearfully and Wonderfully Made," Philip Yancey says:
A certain bridge in South America consists of interlocking vines supporting a precariously swinging platform hundreds of feet above a river. I know the bridge has supported hundreds of people over many years, and as I stand at the edge of the chasm I can see people confidently crossing the bridge. The engineer in me wants to weigh all the factors: measure the stress tolerances of the vines, test the wood for termites, survey all the bridges in the area for one that might be stronger. I could spend a lifetime determining whether the bridge is fully trustworthy. But eventually, if I really want to cross, I must take a step. When I put my weight on that bridge and walk across, even though my heart is pounding and my knees are shaking, I am making a statement-declaring my position.
In the Christian world I sometimes must live like this, making choices which contain inherent uncertainty. If I wait for all the evidence to be in, for everything to be settled, I'll never move. Often I have had to act on the basis of the bones of the Christian faith, before those bones were fully formed in me and before I understood the reason for their existence.
Bone is hard, but it is alive. If the bones of faith do not continue to grow, they will soon become dead skeletons.