James 5:9

"Do not grumble against one another, brothers, so that you may not be judged; behold, the Judge is standing at the door."

After being told to be patient, we are further instructed not to grumble against each other. The context indicates that the patience is to be especially geared toward people. But the object of the patience is narrower than that. We are directed not to "grumble against one another, brothers." Those whom we are directed to show patience with here are other Christians. You would think that other Christians wouldn't need to be shown patience. You would think that they would act in such a way that we would be without tension. However, too often this is not the case. It should be, but it's not. This is hard to bear. We can accept non-Christians wronging us. But Christians! Yes, Christians. And what should our response be? Patience.

What will happen if we fail to show this patience? We will be judged. I'm not sure what that entails, but it doesn't seem to be very positive. In fact there is a sense of urgency an imminent danger. We better avoid grumbling because the judge is standing at the door. This seems unfair. Why should I be judged? I'm the one who has been wronged. That was true originally. But if you grumble against someone, you now assume the position of the one wronging. And someone else's bad actions don't excuse your own. God won't hold you accountable for someone else's actions, He will hold you accountable for yours.