Yesaya 6:6-7

6:6 But then one of the seraphs flew toward me. In his hand was a hot coal he had taken from the altar with tongs. 6:7 He touched my mouth with it and said, “Look, this coal has touched your lips. Your evil is removed; your sin is forgiven.” ¹ 

[6:7]  ¹ tn Or “ritually cleansed,” or “atoned for” (NIV).