What Are We Contending For?

What do we do when people who claimed to believe in Jesus leave the faith and act like unbelievers? What do we do when confronted by untruth in our culture about God and how He is working in the world? How can we stand firm in our faith when the world we live in throws doubt and lies in our face? What can we do? We contend for the faith that has been handed down to us, and we build each other up in that faith.