Joseph Benson's Commentary of the Old and New Testaments - 2 Peter 3:8
2 Peter 3:8. 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 This is an allusion to Psalms 90:4, where Moses had said, A thousand years in thy sight are as one day, which words St. Peter applies with regard to the period intervening between the time when he wrote, and the last day; denoting thereby, 1st, God’s eternity, whereby he exceeds all measure... read more
Albert Barnes' Notes on the Whole Bible - 2 Peter 3:14
Wherefore, beloved, seeing that ye look for such things, be diligent - That is, in securing your salvation. The effect of such hopes and prospects should be to lead us to an earnest inquiry whether we are prepared to dwell in a holy world, and to make us diligent in performing the duties, and patient in bearing the trials of life. He who has such hopes set before him, should seek earnestly that he may be enabled truly to avail himself of them, and should make their attainment the great object... read more