What is Radical Living?

Jesus said, "I am the vine; you are the branches. Whoever abides in me and I in him, he it is that bears much fruit, for apart from me you can do nothing. " John 15:5

Piper's sermon poses three questions:

1- How is radical, risk-taking sacrifice created?

2- What/Who is this great reward?

3- Where is outside the camp for YOU?

I'd like to know your thoughts.