I used to struggle with the story of Cain and Abel and the fact that Cain's offering wasn't good enough. I always thought that Cain gave the best he had just as Abel did, but what I didn't see was that Cain had already been told what offering was acceptable and what was not. It would be like a teacher asking the class to write an essay on their summer vacation and one child turns in a page full of math problems with the excuse that they are better at math than writing. I know that simplifies the whole thing, but it's basically the same. The authority asks for something, explains the rules, and expects for everyone to comply.
And how often do we do this in our daily lives? How often do we decide the rules don't really apply to us, so we change them. The speed limit says 70 mph, so we set our cruise control on 72. What's up with that? What difference is that extra 2 mph going to make in the long run? It's going to get us somewhere, what, 30 seconds sooner, so that's going to change our lives? Why do we always want to push the limits?
Mothers watch as their toddlers get closer to something they were told not to touch. The toddler looks back to see if mom is watching as their hand is hovering over the forbidden object. And then, just as expected, mom sternly says, "NO", and the child touches it anyway.

I watched, the other day, as one of our sweet little granddaughters started to go up our stairs in the house. She was going very slowly, looking around for mom or dad because she knew she wasn't supposed to go up the stairs alone. Her mom sees her, tells her "no" and as mom starts toward her to stop her I could see the grin come across her face. The closer mom got, the faster she went. Not only was she doing what she wasn't supposed to do, she was giggling about it!
I can imagine Cain doing the same thing as he was gathering his offering, going about it with enthusiasm, thinking to himself what a good job he was doing, maybe even giggling a little bit. He just couldn't wait to show God his offering....his goodness....his righteousness. He couldn't see God's heart because he was blinded by his own righteousness.

I was doing one of my favorite things in the world to do the other day, which is sitting on my screened porch reading, pondering, and contemplating life. I had left the screen door to the outside open because my huge polar bear dog, Cleopatra, likes to come in, flop down, let out a huge sigh, spread herself across half the floor and sleep. I saw her coming around the porch and it seemed she had a little perk in her step. She jumped up on the deck, pranced through the screen door wagging her fan of a tail and stood there looking at me with those happy brown eyes. She was so pleased with herself because she had brought me a gift. She had trotted up to my seat with her prize. I could see the confusion on her face as I screamed, jumped up off my chaise and chased her out of my screened room, with her tail tucked and a deer leg jangling out of her mouth.
Although she had brought me what she considered her best, it really wasn't what I have in mind when I'm opening a gift. And isn't that what our righteousness is to God? He said it was "as filthy rags." That doesn't mean like a dirty wash cloth. No, this literally means menstrual cloth, or a cloth that has been wrapped around a runny, pustulous sore. That's what our righteousness is compared to God's righteousness. It is filthy, nasty and vile. Even when we do our best and pat ourselves on the back for our righteous and noble act, it is still smelly and sickening in the nose of God, but a miraculous thing happens when we "do all things through Christ". We please our Father.
Let's seek God's righteousness in anything we do, not our own because it's as a filthy rag....or a deer leg.
Isaiah 64:6 But we are all as an unclean thing, and all our righteousnesses are as filthy rags;