Above all, you must understand that in the last days scoffers will come, scoffing and following their own evil desires. They will say, "Where is the promise of His coming? Ever since our ancestors died, everything goes on as it has since the beginning of creation." 2 Peter 3.3-4
Time must end at some point and God has appointed a day in which He shall judge all men according to their works. Acts 17:30. This is going to happen, so we might as well get ready to meet our Maker. Romans 14:11-12.
Some men think it is a joke that the Lord will end all that we know and afterwards send some people to heaven and others to hell. But such will be the case. Matt 25:46.
God isn't effective by time. Psa 41:13. The centuries can come and go and those years are only like a day to Him. 2 Peter 3.8 However, men are effective by time. Days weeks, months and years can test the perseverance of any person; that is why men scoff at the thought of a Judgement Day because of the passing of 100 or 200 years. .
But men are wrong, Judgement will come as a thief does. Mark 13:32-37. 1 Thess 5.2