“Radical” is one of those words that’s thrown around so casually now that it’s lost nearly all of its force and its distinctive meaning.
But its true meaning is to do with the concept of a root.
A radical change is one that comes from the root; and a radical Christian is one whose roots are in Christ.
Being a radical Christian is not a special, high call that’s just reserved for a few special people. It is what God desires for each of us, expects from each of us, and has equipped each of us for. There is no real alternative.