“But the heavens and the earth, which are now, by the same word are kept in store, reserved unto fire against the day of judgment and perdition of ungodly men.”
King James Version (KJV)
3:7 But the heavens and the earth, that are now - Since the flood. Are reserved unto fire at the day wherein God will judge the world, and punish the ungodly with everlasting destruction.
2Pe 3:7 By the same word. The heavens and earth of old were formed by the word of God, but the same word, which has always been sure, declares that they are reserved for fire. See Ps 50:3 97:3 Isa 66:15,24 Da 7:9 Mal 4:1. Against the day of judgment and perdition of ungodly men. This destruction by fire will be when the Lord is revealed in judgment and when perdition comes on ungodly men.