Radical

Today's Gospel was proof for the early Church that lending money for interest is evil. Jesus actually said much more than that.

"But rather, love your enemies and do good to them, and lend expecting nothing back."

He didn't condemn asking interest, he rather is suggesting that we don't even expect repayment!

And, to top it off, he would like to see us do this, not only to our best friends, but to our enemies as well.

So yes, Christianity is radical; however following Christ closely is also capable of making you radically happy.