2 Peter 3:8-11

8But forget not this one thing, beloved, that one day is with the Lord as a thousand years, and a thousand years as one day. 9The Lord is not slack concerning his promise, as some count slackness; but is longsuffering to you-ward, not wishing that any should perish, but that all should come to repentance. 10But the day of the Lord will come as a thief; in the which the heavens shall pass away with a great noise, and the elements shall be dissolved with fervent heat, and the earth and the works that are therein shall be burned up. 11Seeing that these things are thus all to be dissolved, what manner of persons ought ye to be in all holy living and godliness,