Paul was a well-read person. Paul not only studied God’s word, but he also knew a considerable amount about the society in which he lived.
In order to be an effective Christian we need to understand and know the society in which we live.
We are called to be in the world, but not of it. That means we don’t live our lives according to what the world dictates. It doesn’t mean we don’t learn about and know the world in which we live.
How can we be effective if we have no idea of what is going on around us and how it affects us?