Charles Spurgeon Commentary 2 Peter 3:1-3

"This is now, beloved, the second epistle that I write unto you; and in both of them I stir up your sincere mind by putting you in remembrance; that ye should remember the words which were spoken before by the holy prophets, and the commandments of the Lord and Saviour through your apostles: knowing this first, that in the last days mockers shall come with mockery, walking after their own lusts," — 2 Peter 3:1-3 (ASV)

This second epistle, beloved, I now write to you; in both which I stir up your pure minds by way of remembrance: that you may be mindful of the words which were spoken before by the holy prophets, and of the commandment of us the apostles of the Lord and Saviour: knowing this first that there shall come in the last days scoffers, walking after their own lusts,

This prophecy is most certainly being fulfilled in these days.