Isaiah 6:3, 8
Isaiah 6:3 NASB1995
And one called out to another and said, “Holy, Holy, Holy, is the LORD of hosts, The whole earth is full of His glory.”
Isaiah 6:8 NASB1995
Then I heard the voice of the Lord, saying, “Whom shall I send, and who will go for Us?” Then I said, “Here am I. Send me!”