Then I said, “It’s all over! I am doomed, for I am a sinful man. I have filthy lips, and I live among a people with filthy lips. Yet I have seen the King, the Lord of Heaven’s Armies.” Then one of the seraphim flew to me with a burning coal he had taken from the altar with a pair of tongs. He touched my lips with it and said, “See, this coal has touched your lips. Now your guilt is removed, and your sins are forgiven.”
Isaiah felt his weakness at this moment and recognized that it was not his ability to speak but God's grace that he should have been placing his self worth in. How often we put our faith in our own abilities rather than recognizing that all that we need is God. He is where our identity lies.
I was reading something similar earlier today in regards to our self-worth.
Tomorrow's Bible In a Year Passage: Isaiah 8:1-9:21, 2 Corinthians 12:1-10, Psalm 55:1-23, Proverbs 23:4-5