I preached on Matthew 5:33-37 this past Sunday on letting your "yes be yes, and your no, no" and how such an idea should revolutionize how Christians within the community of Christ communicate and commune with each other. As an example I pointed out a familiar scenario:
You're standing there in church after the service minding your own business and you sense someone burning holes into the back of your head with their eyes. You turn so spot for half a second a brother or sister glowering at you with all their might. But just as quickly as you turned your head, they've averted their deadly gaze and seem to be pretending to be interested in the empty book rack or potted plant next to them. "What's their problem?", you wonder.
What is their problem, indeed. The irony is if you confront this seemingly angry person they'll usually dismiss it, "Really?? No, no, there's nothing wrong..." But then the next week there they are again glowering at you. You can't help but feel lied to and you probably were.
The problem, obviously is multi-faceted but in light of Matthew 5:33-37 one of them is that this angry person's "yes" really isn't their "yes" (or I suppose "no" is more apropos). Can you imagine if the person actually trusted that the same sanctifying work of the Holy Spirit was also at work in you, and that you both commune under the salvation offered through Jesus Christ? I think they'd be more honest with you, trusting and hoping that things could be restored. And that would be refreshing.