Let’s say you are walking through the parking lot of your grocery store. You look down and see a $100 bill on the pavement. Would you pick it up, put it in your pocket and go about your business? Or would you turn it in and seek its owner? You might be tempted to keep it, but you would probably resist that temptation and do the right thing.
What if it was a $50 bill? A $10 bill? A single dollar? At what point would temptation convince you it would be okay to just pocket the money? Satan wants to find that point in your mind and build on it. Not just with money, but all matters of honesty and morality.
It’s a good idea to know your threshold. Giving in to little temptations always leads to bigger ones. That’s how he gets a foothold.