'Flame' in the Bible

and his head and hair [were] white like wool, white as snow, and his eyes [were] like a fiery flame,

"And to the angel of the church in Thyatira write: "This is what the Son of God says, the one who has his eyes like a fiery flame and his feet like fine bronze:

Now his eyes [were] a flame of fire, and on his head [were] many royal headbands having a name written that no one except he himself knows.