When Should We Stand and When Should We Run?

The Bible tells us to stand fight and be courageous for our faith. It also sometimes tells us to run away from some things and some people. What is the difference? How do we know when to plant our feet solidly on the foundation of Christ and truth or when to lace up the running shoes of righteousness and run away? Is it always an obvious answer? Is there ever a time that we would do both? Wait – how would you do THAT?