Isaiah 6:5 in the King James Version
Then said I, Woe is me! for I am undone; because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips: for mine eyes have seen the King, the LORD of hosts.
Context
4 The foundations of the thresholds shook at the voice of him who called, and the house was filled with smoke.
5 Then I said, “Woe is me! For I am undone, because I am a man of unclean lips and I live among a people of unclean lips, for my eyes have seen the King, the LORD of Armies!”
6 Then one of the seraphim flew to me, having a live coal in his hand, which he had taken with the tongs from off the altar.