2 Thessalonians 1:8

in a flame of fire, who will take vengeance on those who do not know God, that is, those who will not listen to the good news of our Lord Jesus.

Hebrews 12:29

for our God, indeed, is a consuming fire.

Revelation 1:14-16

His head and hair were as white as white wool, as white as snow. His eyes were like coals of fire;

Treasury of Scripture Knowledge

Summary

And I saw as the colour of amber, as the appearance of fire round about within it, from the appearance of his loins even upward, and from the appearance of his loins even downward, I saw as it were the appearance of fire, and it had brightness round about.

Bible References

The appearance of fire

2 Thessalonians 1:8
in a flame of fire, who will take vengeance on those who do not know God, that is, those who will not listen to the good news of our Lord Jesus.
Hebrews 12:29
for our God, indeed, is a consuming fire.
Revelation 1:14
His head and hair were as white as white wool, as white as snow. His eyes were like coals of fire;