James 2:14

What is the benefit, my fellow believers, if someone claims to have faith but has no (good) works (as evidence)? Can that (kind of) faith save him? (No, a mere claim of faith is not sufficient- a genuine faith produces good works.) 

Our faith in God will show by our actions and gains in this life.  Our faith will move us over obstacles that others will not be able to climb.  Faith is something that works in our lives to accomplish our goals and beliefs.  If our lives are idle, then so is our faith.