Sin. It's what separates is from God. It's what destroys our lives. It was what we need deliverance from. This verse from Mark names our sin in all its most ugly forms: evil toughts. sexual immorality. theft. murder. adultery....and it goes on....and on....and on. From the beginning of time when Eve envied and coveted that fruit that she was told she could not have and yet she desired it anyway. She stole it and foolishly ate it and then blamed the snake for his role. Since the banishment from Eden we have allowed sin to take over our lives.
As Isaiah speaks, it seems like things had not changed much from the Garden of Eden because foolishness still reigns when we read at the beginning of the passage of Isaish:
Just as Eve and Adam carried out a plan that was so different from God's so have we. We are the "stubborn children" who "add sin to sin" and who do not take direction and we look for ways to solve problems ourselves and take comfort in things other than God. There truly is nothing different since the fall of mankind. Sin separates us from God. Repentance and submission sets us free.
I like how the Message compares the sin in our lives to pollution:
The pollution of sin threatens to take over our lives. Sin is the root of evil and in today's society you don't have to look very far to see just how evil mankind can be.
John MacArthur says: (ephamsis in bold is mine)
I suppose if you lived fifty years ago, to a hundred years ago, you might not understand how really defiled the world is, how really defiled the human race is. You might be limited to the people in your little world and you would only experience extraordinary evil in your community when extraordinary evil happened, or in your circle of friends, or within the framework of your knowledge. But living in the world we live in today, it’s really had to hide how wretched man is. There are not a lot of defenders anymore of the goodness of man. We all, because of mass media and because of ubiquitous cameras everywhere, every human hand on the planet, I think, has a camera in it in the form of a cell phone. And we have cameras watching us everywhere we go in every building along the streets and at the intersections and just about everywhere else...we are then fully informed on the evil of mankind. We know the world is full of defilement. We know it is full of corruption. We know that evil runs deep and it runs wide. We understand that. It is inescapable.