{7} But, beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day.

(7) The taking away of an objection: in that he seems to desire this judgment for a long time, in respect of us it is true, but not before God, which whom there is no time either long or short.

People's New Testament

3:8 But, beloved, be not ignorant of this one thing. Delay was the objection of the scoffers, but time is no element in the counsels of God.

That one day is with the Lord as a thousand years, and a thousand years as one day. He has eternity in which to work out his purposes. He can as well take a thousand years as a day. If he seems to us short lived creatures to delay, it for wise purposes. See Ps 90:4.

Wesley's Notes

3:8 But be not ye ignorant - Whatever they are. Of this one thing - Which casts much light on the point in hand. That one day is with the Lord as a thousand years, and a thousand years as one day - Moses had said, Psalm 90:4, A thousand years in thy sight are as one day; which St. Peter applies with regard to the last day, so as to denote both his eternity, whereby he exceeds all measure of time in his essence and in his operation; his knowledge, to which all things past or to come are present every moment; his power, which needs no long delay, in order to bring its work to perfection; and his longsuffering, which excludes all impatience of expectation, and desire of making haste. One day is with the Lord as a thousand years - That is, in one day, in one moment he can do the work of a thousand years. Therefore he is not slow: he is always equally ready to fulfil his promise. And a thousand years are as one day - That is, no delay is long to God. A thousand years are as one day to the eternal God. Therefore he is longsuffering: he gives us space for repentance, without any inconvenience to himself. In a word, with God time passes neither slower nor swifter than is suitable to him and his economy; nor can there be any reason why it should be necessary for him either to delay or hasten the end of all things. How can we comprehend this? If we could comprehend it, St. Peter needed not to have added, with the Lord.

Jamieson-Fausset-Brown Bible Commentary

8. be not ignorant-as those scoffers are (2Pe 3:5). Besides the refutation of them (2Pe 3:5-7) drawn from the history of the deluge, here he adds another (addressed more to believers than to the mockers): God's delay in fulfilling His promise is not, like men's delays, owing to inability or fickleness in keeping His word, but through "long-suffering."

this one thing-as the consideration of chief importance (Lu 10:42).

one day . thousand years-(Ps 90:4): Moses there says, Thy eternity, knowing no distinction between a thousand years and a day, is the refuge of us creatures of a day. Peter views God's eternity in relation to the last day: that day seems to us, short-lived beings, long in coming, but with the Lord the interval is irrespective of the idea of long or short. His eternity exceeds all measures of time: to His divine knowledge all future things are present: His power requires not long delays for the performance of His work: His long-suffering excludes all impatient expectation and eager haste, such as we men feel. He is equally blessed in one day and in a thousand years. He can do the work of a thousand years in one day: so in 2Pe 3:9 it is said, "He is not slack," that is, "slow": He has always the power to fulfil His "promise."

thousand years as one day-No delay which occurs is long to God: as to a man of countless riches, a thousand guineas are as a single penny. God's oonologe (eternal-ages measurer) differs wholly from man's horologe (hour-glass). His gnomon (dial-pointer) shows all the hours at once in the greatest activity and in perfect repose. To Him the hours pass away, neither more slowly, nor more quickly, than befits His economy. There is nothing to make Him need either to hasten or delay the end. The words, "with the Lord" (Ps 90:4, "In Thy sight"), silence all man's objections on the ground of his incapability of understanding this [Bengel].

Matthew Henry's Concise Commentary

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.