Zechariah 12:6 (a) GOD is prophesying that the rulers of Jerusalem will some day destroy all their enemies, as the fire destroys the wood.
John 18:3 (c) We may understand that this is a type of human intelligence, research and reasoning by means of which men seek to find the Lord JESUS, who is the light of life. "Reason is the natural sun in the mental world." Men with the feeble light of their intelligence seek to find the One who made "the sun to rule by day, and the moon by night."