an all-consuming fire

"Strengthen your feeble arms and weak knees. Make levels paths for your feet, so that the lame may not be disabled, but rather healed. ... You have come to Mount Zion, to the heavenly Jerusalem, the city of the living God. You have come to thousands upon thousands of angels in joyful assembly, to the church of the firstborn, whose names are written in heaven. You have come to God!... the judge of all men, to the spirits of righteous men made perfect, to Jesus the mediator of a new covenant, and to the sprinkled blood that speaks a better word than the blood of Abel....Therefore since we are receiving a kingdom that cannot be shaken, let us be thankful, and so worship God acceptably with reverence and awe, for our God is an all consuming fire!"
-Hebrews 12:12-3,22-4,28-9