In this world of causes great and small, it can be tempting to jump on every bandwagon that comes along. We are not, however, called to megalomania, nor are we called to be equally zealous for all campaigns that present themselves to us. Yet we should never see it as an option to not join the cause of Christ. When He calls we must answer, for He is our captain, and we are His faithful soldiers.
The faith that David exercised in his battle with Goliath was a gift from God. The faith by which we trust Him for salvation is also given by God. We do not naturally want to believe in God or trust Him; we do so only when He changes our hearts. Has God given you the faith to believe? Thank Him for it and serve Him fearlessly.