Flames

Isaiah had an encounter with God before he began to speak as a prophet. He writes,

"In the year that King Uzziah died, I saw the Master sitting on a throne - high, exalted! - and the train of his robes filled the Temple. Angel-seraphs hovered above him, each with six wings. With two wings they covered their faces, with two their feet, and with two they flew." And they called back and forth one to the other, Holy, Holy, Holy is God-of-the-Angel-Armies. His bright glory fills the whole earth. The foundations trembled at the sound of the angel voices, and then the whole house filled with smoke.
I said, "Doom! It's Doomsday! I'm as good as dead! Every word I've ever spoken is tainted - blasphemous even! And the people I live with talk the same way, using words that corrupt and desecrate. And here I've looked God in the face! The King! God-of-the-Angel-Armies!" Then one of the angel-seraphs flew to me. He held a live coal that he had taken with tongs from the altar. He touched my mouth with the coal and said, "Look. This coal has touched your lips. Gone your guilt, your sins wiped out." And then I heard the voice of the Master: "Whom shall I send? Who will go for us?" I spoke up, "I'll go. Send me!""

So also with us.