One cannot always say the same of followers of Jesus. Often, we prefer Jesus to be vague. We like it when he demands no hard choices. But Jesus is that great airline pilot who minces no words, but there is still Good News. God does not always act in the world according to our ideas, notions, plan.
Nothing can be more frustrating.
The Hebrew people in the first reading were not happy because Yahweh was working in wonderful ways outside the group. Their close mindedness was what always got them in trouble. The disciples were unhappy because they saw people outside their group serving in the name of Jesus. This is the trouble in every time and place, when we try to thwart where and how God might be acting. Jesus says the trouble with that kind of thinking is that you can miss God s amazing grace acting in the world.