Psalm 18:8

 Smoke rose from his (God's) nostrils; consuming fire came from his mouth, burning coals blazed out of it.

Smoke rose from his nostrils 
Job 41:18-21  "Its (Leviathan's) snorting throws out flashes of light; its eyes are like rays of dawn. Flames stream from its mouth; sparks of fire shoot out. Smoke pours from its nostrils as from a boiling pot over burning reeds. Its breath sets coals ablaze, and flames dart from its mouth."

consuming fire came from his mouth 
Exodus 15:7  "In the greatness of your majesty you threw down those who opposed you. You unleashed your burning anger; it consumed them like stubble."
Exodus 19:18  Mount Sinai was covered with smoke because the LORD descended on it in fire. The smoke billowed up from it like smoke from a furnace, and the whole mountain trembled violently.
Psalm 50:3  Our God comes and will not be silent; a fire devours before him, and around him a tempest rages.
Psalm 97:3  Fire goes before him and consumes his foes on every side.
Daniel 7:10  "A river of fire was flowing, coming out from before him (the Ancient of Days). Thousands upon thousands attended him; ten thousand times ten thousand stood before him. The court was seated, and the books were opened."

burning coals blazed out of it 
Proverbs 25:21-22  If your enemy is hungry, give him food to eat; if he is thirsty, give him water to drink. In doing this, you will heap burning coals on his head, and the LORD will reward you.
Romans 12:19-21  Do not take revenge, my dear friends, but leave room for God's wrath, for it is written: "It is mine to avenge; I will repay," (Deuteronomy 32:35) says the Lord. On the contrary: "If your enemy is hungry, feed him; if he is thirsty, give him something to drink. In doing this, you will heap burning coals on his head." (Proverbs 25:21-22) Do not be overcome by evil, but overcome evil with good.  

(parentheses are mine)

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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