Then the LORD put forth his hand, and touched my mouth. And the LORD said unto me, Behold, I have put my words in thy mouth.
Touched my mouth - a symbolical act in supernatural vision, implying that God would give him utterance, notwithstanding his inability to "speak" (Jeremiah 1:6). So Isaiah's lips were touched with a living coal (Isaiah 6:7; cf. Ezekiel 2:8-10; Daniel 10:16).