3 Having first of all the knowledge that in the last days there will be men who, ruled by their evil desires, will make sport of holy things, 4 Saying, Where is the hope of his coming? From the death of the fathers till now everything has gone on as it was from the making of the world. 5 But in taking this view they put out of their minds the memory that in the old days there was a heaven, and an earth lifted out of the water and circled by water, by the word of God; 6 And that the world which then was came to an end through the overflowing of the waters. 7 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.

8 But, my loved ones, keep in mind this one thing, that with the Lord one day is the same as a thousand years, and a thousand years are no more than one day.

9 The Lord is not slow in keeping his word, as he seems to some, but he is waiting in mercy for you, not desiring the destruction of any, but that all may be turned from their evil ways. 10 But the day of the Lord will come like a thief; and in that day the heavens will be rolled up with a great noise, and the substance of the earth will be changed by violent heat, and the world and everything in it will be burned up.

Matthew Henry's Commentary on 2 Peter 3:3-10

Commentary on 2 Peter 3:1-4

(Read 2 Peter 3:1-4)

The purified minds of Christians are to be stirred up, that they may be active and lively in the work of holiness. There will be scoffers in the last days, under the gospel, men who make light of sin, and mock at salvation by Jesus Christ. One very principal article of our faith refers to what only has a promise to rest upon, and scoffers will attack it till our Lord is come. They will not believe that he will come. Because they see no changes, therefore they fear not God, Psalm 55:19. What he never has done, they fancy he never can do, or never will do.

Commentary on 2 Peter 3:5-10

(Read 2 Peter 3:5-10)

Had these scoffers considered the dreadful vengeance with which God swept away a whole world of ungodly men at once, surely they would not have scoffed at his threatening an equally terrible judgment. The heavens and the earth which now are, by the same word, it is declared, will be destroyed by fire. This is as sure to come, as the truth and the power of God can make it. Christians are here taught and established in the truth of the coming of the Lord. Though, in the account of men, there is a vast difference between one day and a thousand years, yet, in the account of God, there is no difference. All things past, present, and future, are ever before him: the delay of a thousand years cannot be so much to him, as putting off any thing for a day or for an hour is to us. If men have no knowledge or belief of the eternal God, they will be very apt to think him such as themselves. How hard is it to form any thoughts of eternity! What men count slackness, is long-suffering, and that to us-ward; it is giving more time to hisown people, to advance in knowledge and holiness, and in the exercise of faith and patience, to abound in good works, doing and suffering what they are called to, that they may bring glory to God. Settle therefore in your hearts that you shall certainly be called to give an account of all things done in the body, whether good or evil. And let a humble and diligent walking before God, and a frequent judging of yourselves, show a firm belief of the future judgment, though many live as if they were never to give any account at all. This day will come, when men are secure, and have no expectation of the day of the Lord. The stately palaces, and all the desirable things wherein wordly-minded men seek and place their happiness, shall be burned up; all sorts of creatures God has made, and all the works of men, must pass through the fire, which shall be a consuming fire to all that sin has brought into the world, though a refining fire to the works of God's hand. What will become of us, if we set our affections on this earth, and make it our portion, seeing all these things shall be burned up? Therefore make sure of happiness beyond this visible world.