holding faith and a good conscience; which some having thrust away made a shipwreck concerning the faith;

 Second, the endless genealogies. The ancient world had a passion for genealogies. We can see that even in the Old Testament with its chapters of names and in the New Testament with the genealogies of Jesus with which Matthew and Luke begin their gospels. A man like Alexander the Great had a completely artificial pedigree constructed in which he traced his lineage back on the one side to Achilles and Andromache and on the other to Perseus and Hercules. 