No one wants to be that person that everyone stares at, but Christians are commanded to live differently. So why can't we just stay quiet and live a life where we never speak up for what is right?
Do we have to scream from the tops of buildings and create blogs or podcasts? No, but God has spaces and people in our lives where we can stand for him or deny him (just like Peter).
So which are you doing? Why is it hard to speak up? What can we do about it?
