Hey Jude don’t make it bad
Take a sad song and make it better (Beatles)
So the sad song here is that Jude, the brother of Jesus himself, is about to write a letter about sharing in Salvation when he gets word that such false teachings have infiltrated the church. Jude and Peter grew up in the Faith together and it is obvious by their words and writing that they have spent much time together, for their teachings and writings are extremely similar.
We know that Jesus and Jude (and James) grew up in a God centered home where the Scriptures would be taught, so the Jewish references in this book should be expected. Jude holds nothing back for the danger is INSIDE the church. If you think this isn’t relevant today WAKE UP.