Everyone feels afraid many times during life. However, when the Bible instructs us to “fear not,” it doesn’t mean not to feel afraid; rather, it means to decide to press on even in the face of fear.
Several times, the Israelites were instructed to “be strong and courageous.” For example, in Deuteronomy 31:6, Moses commanded Israel: “Be strong and courageous. Do not be afraid or terrified because of them, for the Lord your God goes with you; he will never leave you nor forsake you.” Even in the face of fear, we too must “be strong and courageous.”
Indeed, we are encouraged in 1 Corinthians 16:13 to be men of courage; be strong. So, next time you feel afraid, overcome your feelings through prayer so that you can “be strong and courageous.”
Source: http://www.christnotes.org/ww.php?d=2010-01-18