I wonder if the Pharisees ever said to themselves, hey maybe we should try believing that Jesus is the Messiah. Maybe he is who he says he is. Instead they continually tried, unsuccessfully, to trap him and make him look dumb.
I also thinks its funny that before they try to trick Jesus, they spend some time softening him up with nice words. They don't really care about him at all, but they want to try to get him off his guard. Make him relax or something. Satan tries the same kind of stuff with us. Tries to get us to not guess that temptation is coming, or to put us in a unique situation, or just surprise us. It's all just to make us look dumb, though. JM