Pictures of an Apostate
Jesus was quick to use the natural world around Him as a teaching tool for the disciples and the masses. Jude also uses the well known natural examples to those around him in teaching about the false and apostate teachers that had come into the church. These may have come in unnoticed, but if the church would just take a look they would not be able to stay hidden for long. Their selfish needs and fruitlessness would be clearly seen by all.