First of all you must understand this, that scoffers will come in the last days, with scoffing, following their own lusts

The Lord is not slow about his promise, as some count slowness, but is patient toward you, not wishing for any to perish but for all to come to repentance.

But the day of the Lord will come like a thief, in which the heavens will pass away with a roar and the elements will be destroyed with fire, and the earth and the works that are in it will be burned up.