The answer is: Didn't want to spoil inheritance

Ruth 4:5-6

In the book of Ruth, we discover a fascinating decision the kinsman redeemer has to make. When he first hears about the opportunity to marry Ruth, his initial enthusiasm dwindles as he remembers his own responsibilities. Why is that? Because marrying Ruth could jeopardize his inheritance rights! He was worried that if they had children together, those children would inherit part of his estate, creating a conflict with what he already had. Think of it like being invited to sit at a lavish buffet but realizing you can't eat the magic dessert without sharing your plate!

This moment underscores the cultural significance of land and lineage in ancient Israelite society. Inheritance wasn’t just about material wealth; it represented family legacy and identity. The unknown kinsman, who remains nameless in scripture, prefers to protect his own estate rather than embrace the chance of redemption that would come from marrying Ruth.

But let's take a moment to celebrate what his refusal allowed. It opened the door for Boaz, who steps in as the hero of the story. This reflects a greater theme in the genealogy of David (Ruth being his great-grandmother) and eventually connects us to the New Testament, as key figures often emerge from unexpected choices.

Additionally, have you ever thought about Ruth herself? She embodies remarkable loyalty and courage while challenging societal norms. Her story invites us to expand the concept of family beyond blood relations, emphasizing love and commitment wherever they are found. And isn't that kind of the heart of the matter?