Jude.
5) Though you already know all this, I want to remind you that the Lord.
at one time delivered his people out of Egypt, but later destroyed those who did not believe. 6) And the angels who did not keep their positions of authority but abandoned their proper dwelling—these he has kept in darkness, bound with everlasting chains for judgment on the great Day. 7) In a similar way, Sodom and Gomorrah and the surrounding towns gave themselves up to sexual immorality and perversion. They serve as an example of those who suffer the punishment of eternal fire.
at one time delivered his people out of Egypt, but later destroyed those who did not believe. 6) And the angels who did not keep their positions of authority but abandoned their proper dwelling—these he has kept in darkness, bound with everlasting chains for judgment on the great Day. 7) In a similar way, Sodom and Gomorrah and the surrounding towns gave themselves up to sexual immorality and perversion. They serve as an example of those who suffer the punishment of eternal fire.
Jude was almost certainly half-brother of Jesus:
As the brother of James, it has traditionally meant Jude was also a brother of Jesus, since James is described as being the brother of Jesus. This is why Clement of Alexandria (c. 150–215 AD) wrote in his work "Comments on the Epistle of Jude" that Jude, the author, was a son of Joseph and a brother of Jesus.