What I learned from reading Ruth

Ruth seems to have two main themes, Kindness and Redemption.

Kindness:

• Ruth is faithful to her mother-in-law even when she does not need to be.
• Boaz is kind to Ruth, by allowing her to glean from his field, in places where she would be safe

Redemption:

• Boaz redeems Ruth by purchasing the land that belonged to Ruth's deceased husband. 

Another indirect theme is that the gospel is for all mankind:

• The author keeps mentioning that Ruth is not from Israel. She is "Ruth the Moabite” as if to emphasis that God is being gracious to her even though she is not an Israelite. 
• The book of Ruth illustrates that God used people who were not physical descendants of Abraham to be in the line of David, which lead to the messiah.
• Ruth is the Great-Grandmother of David