Heidegger's Bible Handbook: Jude: Time of Writing

5. That it was written comparatively late, is proven.

That this Epistle was written quite late, is hardly able to be doubted. He certainly wrote after Peter, of whose words, by the same Spirit with which he was inspired, he generally makes use, in such a way that this Epistle is held by some as a compendium of Peter’s. But also out of verse 17 it is demonstrated that Jude wrote after the Apostles’ preaching and forewarning long since made, and sufficiently delivered to the saints, verse 3, and so he was a witness of those things that the Apostles previously taught and warned.