'Flame' in the Bible

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

And unto the angel of the church in Thyatira write; These things saith the Son of God, who hath his eyes like unto a flame of fire, and his feet are like fine brass;

His eyes were as a flame of fire, and on his head were many crowns; and he had a name written, that no man knew, but he himself.