Matthew 3:12
His winnowing-shovel is in His hand, and He will make a thorough clearance of His threshing-floor, gathering His wheat into the storehouse, but burning up the chaff in unquenchable fire."
2 Thessalonians 1:8-9
He will come in flames of fire to take vengeance on those who have no knowledge of God, and do not obey the Good News as to Jesus, our Lord.
Hebrews 2:3
how shall *we* escape if we are indifferent to a salvation as great as that now offered to us? This, after having first of all been announced by the Lord Himself, had its truth made sure to us by those who heard Him,
Hebrews 10:28-29
Any one who bids defiance to the Law of Moses is put to death without mercy on the testimony of two or three witnesses.
Hebrews 12:18-21
For you have not come to a material object all ablaze with fire, and to gloom and darkness and storm and trumpet-blast and the sound of words--
Hebrews 12:29
For our God is also a consuming fire.
Revelation 22:20
"He who solemnly declares all this says, "'Yes, I am coming quickly.'" Amen. Come, Lord Jesus.