A typological study of Ruth as a type of the bride of Christ (from Lyn Mize's website, "The Open Door?).  Only included snippets from website on above study.  Important to read in entirety...too long to post.

Most works on Ruth have emphasized Boaz as a type of the Redeemer Jesus Christ, and Ruth as a type of the Church. This is partially true since Ruth is a type of the bride of Christ, but she does not represent all of the Church. It is Ruth and Orpah together who typify the whole Church, and Ruth typifies the faithful members of the Church who become the bride of Christ. It is Ruth (wise virgin?) who clings to Naomi even in her poverty-stricken condition. It is Orpah (foolish virgin?) who goes back to Moab, a type of the Gentile world system.

In the same way, Ruth and Orpah prefigure the Church. As Gentiles under the curse, estranged from God, both are brought into the family of God through the "exile" or Diaspora of Israel. Both believe in Naomi's God and both follow Naomi out of the land they were in toward the land of Judah. It is Ruth who crosses over the Jordan River into the land, but Orpah turns back before she crosses over Jordan. Crossing the Jordan is a type of soul salvation and entering the spirit-filled life, so only Ruth entered the spirit-filled life, but Orpah failed to do so. This does not negate the fact that Orpah was still part of the family of God, even though she turned back to the world. Consequently, Orpah typifies the unfaithful members of the Church who are spiritually saved but do not go on into maturity in the faith.

It is a tough decision, but Orpah expresses her affection to Naomi and returns to the world, but Ruth clings to Naomi and crosses over the Jordan River into the promised land. Orpah has decided that she cannot pay the costs to go on into the promised inheritance, but Ruth has decided that she is willing to pay the price for realizing her inheritance. Ruth will discover that she will be required to work diligently in the field of Boaz, but He will provided for her needs and watch over her and protect her during the time that she will be working in His field. Also, Ruth will become the bride of this rich and powerful Jew, and she will share in His wealth and His power. The costs are great, but the rewards will be worth the costs.

Unfortunately, there are numerous Christians who have chosen the world and have rationalized to themselves that they will still realize the inheritance of being the bride of Christ without any sacrifice or work on their part. This is a common belief in this Laodicean church age, and these Christians will actually get angry with those Christians who enumerate the costs for realizing the redemption of our widowhood.

And Ruth was taken up and went into the "city". The word for "took up" means that Ruth was exalted, taken up, taken away, carried away, and sustained or endured. It is the bride of Christ who endures unto the end and is taken away in the Firstfruits Rapture to that Great City called the New Jerusalem.