"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." Deuteronomy 31:6 (NIV)
The "them" refers to the nations that the nation of Israel will encounter as they enter into the Promised Land, but I think that we can apply that to the things that scare us in our lives today. We don't have to be afraid of anything.
"Trust in the Lord with all your heart and lean not on your own understanding; in all your ways submit to him, and he will make your paths straight." Proverbs 3:5,6 (NIV)
So what are you afraid of? Who or what do you put your trust in?