==The Practicality of Christian "Faith"==
The verb for the word "faith" in Greek is πιστεύω (pisteuo), which is translated most often as "believe" in English. Having faith, believing, trusting, or having confidence are all things that imply much more than a simple head knowledge about something, and more specifically God himself. For example, it is possible for one to acknowledge God's existence and know it as a fact deduced from logical arguments, and yet still not make God a practical faith, belief, trust, or confidence in your their life. Faith, then, is a trusting action taken based on knowledge.
Often times the example of a chair is given to illustrate the practicality of biblical faith. When you sit down in a chair (and perhaps you are now, while reading this article), do you generally worry whether that chair will hold you up? Usually, one will never think about the chair, and take it for granted. Another way to think of that same illustration is a person who sits on the edge of their seat, because they are nervous about the chair. They are not sitting back and resting in the chair, but tensed and ready just in case it turns out that the chair becomes untrustworthy and falls over.