_But the heavens that now are, and the earth, by the same word have been stored up for fire._ The Apostle now turns away from what the Old Testament Scriptures relate as history of the past to what the same records teach us concerning the future; and he deals partly with promise, partly with prophecy. The earth will not be destroyed again by a deluge. God hath made His covenant: "I will establish My covenant with you, neither shall all flesh be cut off any more by the waters of a flood, neither shall there any more be a flood to destroy the earth" (Gen. ix. 11). But there will be a judgement; and then not, as in the days of Noah, will the κόσμος, the beautiful order of nature, alone be destroyed, but heaven and earth alike shall be involved in the common overthrow. Here the Apostle is but the expositor of the words of psalmists and prophets of the older times. He who sang, "Of old Thou hast laid the foundation of the earth, and the heavens are the work of Thy hands," was inspired to add, "They shall perish, but Thou shalt endure; yea, all of them shall wax old like a garment: as a vesture shalt Thou change them, and they shall be changed" (Psalm cii. 25). Isaiah, the evangelist among the prophets, saw more, and connects this mighty change with the day of the Lord's vengeance: "Then shall all the host of heaven be dissolved, and the heavens shall be rolled together as a scroll" (Isa. xxxiv. 4); and in another place he foresees how "the heavens shall vanish away like smoke, and the earth shall wax old like a garment, and they that dwell therein shall die in like manner, ... for Mine arms shall judge the people" (Isa. li. 6); and yet again in more solemn wise, "The Lord will come with fire, and with His chariots like a whirlwind, to render His anger with fury and His rebuke with names of fire, for by fire and by His sword will the Lord plead with all flesh" (Isa. lxvi. 15). And this he proclaims as the preparation for "the new heavens and the new earth which He will make." Daniel also tells us of God's "throne of judgement to be set, which is like the fiery flame, and His wheels as burning fire" (Dan. vii. 9).
With such light from the lamp of prophecy, the Apostle in his exegesis proclaims the nature of the final judgement. Like other New Testament writers, he has attained, since the day of Pentecost, a deeper insight and a firmer grasp of the purport of what Moses in the Law and the prophets did write. We can see how on that very day thoughts like these which he expresses in his letter were borne in upon his mind. For not only does he apply the prophecy of Joel to the events which then struck the multitude with wonder, but he carries on the lesson further to the coming of the great and notable day of the Lord, and reminds his hearers that then God "will show wonders in heaven above and signs in the earth beneath, blood and fire and vapour of smoke, when the sun shall be turned into darkness, and the moon into blood" (Acts ii. 19). And the like illumination had been bestowed on St. Paul. For he too tells (1 Cor. iii. 13) of a day when each man's work shall be proved by fire; and more definitely he assures the Thessalonians, to whom he wrote much concerning the day of the Lord, that there will come a "revelation of the Lord Jesus from heaven with the angels of His power in flaming fire, rendering vengeance to them that know not God, and to them that obey not the gospel of our Lord Jesus Christ" (2 Thess. i. 8).