I wonder if he was tired or angry when Jesus spoke of casting fire upon the earth. He sounds fed up. It's one of those moments when he makes us uncomfortable. When he reminds us that he is not just the smiling, laughing guy sitting with the kids and holding a fluffy lamb. Even that first statement shows that I'm trying to make some sort of excuse for him. "Surely something was bothering Jesus." We're quick to make the teacher more palatable.