Kenneth B. Alexander 
The Book of Ruth — Faithfulness & Redemption [EPUB ebook] 

Book of Ruth is the story of a heathen woman Ruth from Moab who later became part of the lineage of Jesus Christ. It illustrates how God put together the lineage of David and Christ using a pagan and a prostitute as part of the family tree, due to their faithfulness and willingness to abandon their own cultures and accept Jehovah (YHWH) as the one true God. The exact date of the book is unknown but it occurred within the time of the Judges, probably during Gideon’s reign. Samuel is generally considered to be the author.