In the year King Uzziah died, I saw the Lord seated on a high and lofty throne, with the train of his garment filling the temple. Seraphim were stationed above; each of them had six wings: with two they veiled their faces, with two they veiled their feet, and with two they hovered aloft. They cried one to the other, “Holy, holy, holy is the LORD of hosts! All the earth is filled with his glory!” At the sound of that cry, the frame of the door shook and the house was filled with smoke. Then I heard the voice of the Lord saying, “Whom shall I send? Who will go for us?” “Here I am,” I said; “send me!”  (Is 6:1-8)
https://bible.usccb.org/bible/readings/070922.cfm
Today we begin reading the book of the Prophet Isaiah in the daily Mass. The call of Isaiah is impressive . . . as well as the message the prophet brings of the God who comes to save us.