2 Peter 3:8-14New King James Version (NKJV)

⁸ But, beloved, do not forget this one thing, that with the Lord one day is as a thousand years, and a thousand years as one day. ⁹ The Lord is not slack concerning His promise, as some count slackness, but is longsuffering toward us,^[a] not willing that any should perish but that all should come to repentance.

The Day of the Lord

¹⁰ But the day of the Lord will come as a thief in the night, in which the heavens will pass away with a great noise, and the elements will melt with fervent heat; both the earth and the works that are in it will be burned up.^{[b] 11} Therefore, since all these things will be dissolved, what manner of persons ought you to be in holy conduct and godliness, ¹² looking for and hastening the coming of the day of God, because of which the heavens will be dissolved, being on fire, and the elements will melt with fervent heat? ¹³ Nevertheless we, according to His promise, look for new heavens and a new earth in which righteousness dwells.

Be Steadfast

¹⁴ Therefore, beloved, looking forward to these things, be diligent to be found by Him in peace, without spot and blameless;