When God reveals His glory to Isaiah, he knows the gig is up. He is undone. He knows he is unfit for God’s presence. His lips are unclean, as ours are. James tells us that no man can tame the tongue. Who among us has not sinned with our tongue? Isaiah personally is unclean, and he also knows the guilt of his people. We know the guilt of our culture quite well, too. We live in a dark house, trying to shine our lamp on a stand, not hidden under a basket. But our lamp is nothing compared to the sun outside in the sky. Our eyes have seen the king. Our world is spiritually dark and blind, but what God has given us grace to see doesn’t do us much credit, either. We have been blessed to see our sinfulness for what it is.