With all due respect to the Bishop, if it's that simple, then we don't really need a religion do we.  No wonder so many no longer feel compelled to go to Church anymore; if "be nice to one another" is all I have to do, and God loves me regardless of my actions, heck, that gives me an extra hour a week for myself.

The problem, of course, is how love is defined.  If you want to learn what love is, look to parents (after all God is our father); or better yet, become a parent.  Parents love their children by teaching them; and isn't that what Jesus really did?  Teach?  

And here's the part that no one likes:  you just can't say "Be nice."  You have to teach the bad with the good:  DO this DON'T do that.  Love requires expressions of approval and expressions of disapproval.  There are good works and there is sin.  When you do wrong/sin, you must atone for it (e.g., apologize/confess).  God loves us but he is not always pleased with us.  Lots of spoiled brats around these days...