There is an insurmountable gap between how glorious God is and how sinful we are.
When you see great art, you are often left in awe of the artists and their abilities. Likewise, when we see creation, we should be in total awe of the creator.
We often feel like we know ourselves perfectly yet there are parts that we don't see that are exposed to others.
Two kinds of sins:
Apply the law and God will cover the gap. Yet, we cannot perfectly apply the law on our own. This is why we need Jesus.