Since all these things are thus to be dissolved, what sort of people ought you to be in lives of holiness and godliness,
Heaven and earth, he says, shall pass away for our sakes; is it meet, then, for us to be engrossed with the things of earth, and not, on the contrary, to attend to a holy and godly life? The corruptions of heaven and earth will be purged by fire, while yet as the creatures of God they are pure; what then ought to be done...
The apostle, having instructed them in the doctrine of Christ's second coming, I. Takes occasion thence to exhort them to purity and godliness in their whole conversation: all the truths which are revealed in scripture should be improved for our advancement in practical godliness: this is the effect that knowledge must produce, or we are never the better for it.
Commenting on 2 Peter 3:11-18
Seeing then that all these things shall be dissolved,.... By fire; the heaven with all its host, sun, moon, and stars, clouds, meteors, and fowls of the air; the earth, and all that is upon it, whether of nature, or art; and, since nothing is more certain than such a dissolution of all things, what manner of persons ought ye to be in all holy conversation and godliness?