Isaiah 4:3–4
3 kAnd he who is left in Zion and remains in Jerusalem will be called lholy, everyone who has mbeen recorded for life in Jerusalem, 4 when nthe Lord shall have washed away the filth of othe daughters of Zion and cleansed the bloodstains of Jerusalem from its midst by a spirit of judgment and by pa spirit of burning.1
Isaiah 6:6–7
6 Then one of the seraphim flew to me, having in his hand a burning coal that he had taken with tongs from the altar. 7 And he btouched my mouth and said: “Behold, this has touched your lips; your guilt is taken away, and your sin atoned for.”