We can’t help ourselves. If Tim Tebow speaks, we listen. Not just Christians, but everyone. Christians love his testimony, and non-Christians hate it. But no one ignores it. And almost no one ignores him. Why? Well, because sometimes—ok, nearly all the time—he says things that make even the most cynical unbeliever perk up, be encouraged, and go out the door for another day. In mid-February he was, once again, defending himself against naysayers who sniff…