According to this textbook, why should we learn about religion in the past?

When Boaz spreads his cloak over Ruth, it is a sign of

It is intentional, organized and structured form of learning, imparted in educational institutions like school, college or university in order to modify the behavior of an individual.

It is formed by several families living together based on marriage ties, common descendants, friendship affiliations and members usually have common interest, or enemy. 

I had a stronger claim to Ruth than Boaz