The traditional view of this book is that Jude, the brother of James who was the leader at the church in Jerusalem, and the 1/2 brother of Jesus, wrote this letter to believers. Since he used many Old Testament examples, he was probably writing to Jewish believers, but we do not know where he is located, or exactly where the letter is sent. Verse one defined the believers as called, loved, and kept in Jesus Christ. Jude is similar to 2 Peter chapter 2, and so it is possible that it was written about the same era, which may be mid to late AD. 60's. At first Jude had planned on writing a letter about their salvation, but he has heard about false teachers in their church, and he writes them to stay strong in their faith, beware of false teachers, and since believers have received mercy because Jesus shed His blood on the cross, so we must also be merciful.
