The word "mercy" means not getting what you deserve. We all want mercy, don't we? Few of us want to get what we deserve! Here's a lesson on how to receive mercy: give mercy! When someone steps on your toes, when someone hurts your heart, give them mercy. Don't give them what they deserve. Don't demand retribution.
Then, when the day comes that you need mercy from them, when you hurt them, when you step on their toes, because you've extended mercy to them, they will extend mercy to you!
It's called the law of reciprocity. Whatever you give out eventually returns to you. It's a spiritual truth of the universe. Try it! See if it doesn't work!
We'll all need mercy one day. I promise!