'Flame' in the Bible

His head and his hair were white as white wool, like snow. His eyes were like a flame of fire.

"To the angel of the assembly in Thyatira write: "The Son of God, who has his eyes like a flame of fire, and his feet are like burnished brass, says these things:

His eyes are a flame of fire, and on his head are many crowns. He has names written and a name written which no one knows but he himself.