Hebrews 12:29

Deuteronomy 4:24 NIV
For the Lord your God is a consuming fire, a jealous God.

Deuteronomy 9:3 NIV
But be assured today that the Lord your God is the one who goes across ahead of you like a devouring fire. He will destroy them; he will subdue them before you. And you will drive them out and annihilate them quickly, as the Lord has promised you.

Hebrews 10:27 NIV
but only a fearful expectation of judgment and of raging fire that will consume the enemies of God.