We say we believe in God, but our actions sometimes betray a lack of trust. Sometimes I get nervous when flying. I tell myself that there's absolutely nothing I can do to affect the outcome of the flight. There's nothing I can do to make the flight stay up, and there would be nothing I could do to mess up the flight, even if I wanted to.
Anxiousness and fearfulness is perfectly human. It's not something you can just turn off, even if your head knows it's inappropriate. It's a little like an addiction. You can tell someone to stop doing something they're addicted to, but their will is impaired. It's probably going to take some outside help, including help from God.
But my head tells me that in such moments of fear, I should trust in God. He can effect the outcome of the flight. If there is some mechanical issue waiting to surface, God can take care of it. And if he doesn't, it must be for some greater purpose. The proper posture is trust.
I think many Christians also have a similar below the surface lack of trust when it comes to catching out the "law-breaker." Christian colleges used to expend considerable energy not only creating rules but making every effort to make sure those who broke them were caught. I know a professor who has an elaborate system to figure out whether students have cheated on an objective test.
I use a moderate number of common sense checks. Give alternating versions of the test to students sitting next to each other with the questions in a different order. Online tests can randomize the order, give the questions one by one and not let you go back once you've given your answer.
But I was struck when I taught a few courses at Notre Dame at the honor system they had back then. If you choose to cheat, you're only hurting yourself in the long run. And, after all, God knows. I still think it makes sense to protect students from themselves a little, to help them do the right thing. But, ultimately, I think the honor system reflects a more mature ethic.
It is our business to work so that people do not harm others. But it is not our responsibility to make sure wrong-doers get their just deserts and punishment. We should try to stop people from harming others--including themselves. But it's not our job to make sure wrong-doers are caught and punished. That's God's job--and of course the job of the government when it is a common law (rather than a specifically Christian law, Rom. 13).
Do we trust God to do what is right with those who break the rules? Or do we think if we don't catch them, they'll get by with stuff? This attitude may not only reflect a lack of trust in God, who sees and does the right thing. It may also betray Jonah or elder brother syndrome in the Parable of the Prodigal Son, where we're afraid God will show the wrong-doer mercy.