Matthew 3:12
Whose fan is in His hand, and He will thoroughly cleanse His threshing-floor, and will gather His wheat into the granary, but the chaff He will burn with unquenchable fire."
2 Thessalonians 1:8-9
awarding vengeance to those who know not God, and to those who obey not the Gospel of our Lord Jesus;
Hebrews 2:3
how shall we escape, having neglected so great salvation; which, indeed, having at first been spoken through the Lord, was confirmed to us by those who heard;
Hebrews 10:28-29
Anyone, having set aside Moses' law, dies without mercy on the testimony of two or three witnesses;
Hebrews 12:18-21
For ye have not come to a mount that is touched and burning with fire, and to blackness, and darkness, and tempest,
Hebrews 12:29
for, verily, our God is a consuming fire.
Revelation 22:20
He Who testifieth these things saith, "Yea; I come quickly." Amen; come, Lord Jesus!