'Fire' in the Bible

And sent destruction on Sodom and Gomorrah, burning them up with fire as an example to those whose way of life might in the future be unpleasing to him;

But the present heaven and the present earth have been kept for destruction by fire, which is waiting for them on the day of the judging and destruction of evil men.

Looking for and truly desiring the coming of the day of God, when the heavens will come to an end through fire, and the substance of the earth will be changed by the great heat?