The only way to begin to fully appreciate the difference between Holy God and sinful man is not to delve into the depths of our own sinful nature but to experience the heights of God holiness and perfection. We know our lives and actions amount to trash. We don't often enough learn how to even begin to comprehend the holy perfection of the Lord. Often it's because we don't know how.
Even as I write this I can't imagine how to start experiencing all this. But then I am reminded that the gulf created between us and God has been bridged! With Jesus standing in between us, we are given a framework by which we can understand all this holy goodness that is so wholly other than ourselves.
And we are people in desperate need of a framework, are we not?