Jude:
Another name for Jude would be Judas.
Jude is most likely the Half-brother of Jesus.
Jude is the preface to Revelation.
II Peter 2:1 talks of future apostasy.
Jude talks of present apostasy.
Jude initially was going to write about salvation.
Jude writes to counter apostasy.
Jude describes and writes in series of threes.