“Beloved, while I was very diligent to write to you concerning our common salvation, I found it necessary to write to you exhorting you to contend earnestly for the faith which was once for all delivered to the saints.”
When I was a little boy, I liked to go to the movies on Saturday afternoons, and we would see Tarzan. Tarzan was the hero of every little boy when I was growing up. But there was one time that I was always concerned for Tarzan. Tarzan would be swimming in the river, but over on the shore would be a crocodile. The crocodile would blink his eyes a couple of times and then slide into the water. Tarzan would be swimming along and not know that crocodile was there, and I would be so frightened because I can’t think of anything worse than to be swimming with a crocodile. Somehow Tarzan would always out-swim the crocodile, but what happened in that movie is an illustration of what Jude wrote to warn the Church about. Jude gave a warning that there are certain people who have crept into the Church. (See verse 4.) He described somebody who could slip into the water without even making a ripple. This is very dangerous and sinister. So, Jude wrote this book to sound an alarm.
Read John 10 today. How did Jesus talk about others who might try to sneak into the Church?