The Lord teaches Isaiah to be a lightening rod: Isaiah has received instruction well from his experience of suffering. Daily he has learned to accept it willingly like a sink does water, like a lightening rod does the bolt. Because he did not turn away from these powerful strikes, but stood upright in their midst; he received them without damage. There seems to be no end to the hits the lightening rod can absorb with no effect. Instead of receiving shame and disgrace, which was the destructive intent of his suffering, he receives understanding. A daily lesson on how to be sustained without disgrace or shame.
“Let the one who walks in the dark, who has no light, trust in the name of the Lord and rely on their God.” (V10)
But the ones who don’t trust anymore and rely on their own knowledge to escape their darkness; they will lie down in torment."