The key to this chapter is “rest,” so for us it is a picture of our finding rest in Christ.
V.1-15 Obedience and submission are two great pillars on which this rest depends. Ruth displays both in this chapter. There is no suggestion of immorality here. Boaz and all others in the city knew that Ruth was a virtuous woman. He wants a woman of worth for his wife. In Scripture we learn that believers are to be the bride of Christ (Eph. 5:25-32). We are to keep ourselves unspotted from the world and pure for Him.
V.16-18 Apply them to yourself as a believer.