One way to prepare is to avoid becoming a scoffer like the author of this article.
Peter warned about scoffers who deny Christ’s return. (2 Pet. 3)
Paul warned about those who deny the resurrection. (1 Cor. 15)
Christ warned about false prophets and false Christs. (Mat. 25)
John warned about the mark of the beast. (Rev. 13)
Lot’s of other warnings which this false teacher is essentially telling his audience to ignore.
Christ’s sheep will listen to His voice and flee from voices like this false teacher. (John 10)
Notice these are believers doing the mocking here:
“Knowing this first, that there shall come in the last days scoffers, walking after their own lusts, And saying, Where is the promise of his coming? for since the fathers fell asleep, all things continue as they were from the beginning of the creation.” 2 Peter 3:3-4