Here’s an old story I heard years ago from one of my favorite preachers—Rick Atchley. A woman was bitten by a rabid animal, so she went to a doctor who tested her. After the test, the doctor said to her, "I'm sorry to tell you this, but we have now confirmed that you do have rabies."
Immediately the lady took out a pad and a piece of paper and began writing names. The doctor was sympathetic as he saw her do this, and without thinking he asked her, "Oh, are you making out a will?"
"Will!", she replied, "I'm writing a list of all the people I want to bite!"
It is amazing how often we refuse to forget past occasions when other people have wronged us. Many times we insist upon having bitter feelings towards someone who has "done us wrong." If we're not careful, we even at times catch ourselves trying to avenge a past wrong.
Well, if bitterness is your game, if negative feelings toward other people are a habit with you, Jesus is your enemy. Why? Because in Matthew 5:7 Jesus says:
Blessed are the merciful, for they will be shown mercy.