The answer is: Didn't want to spoil inheritance

Ruth 4:5-6

In the story of Ruth, we find an intriguing intersection of personal desires and family responsibilities. The kinsman who is first in line to redeem Ruth ultimately decides against marrying her because he is concerned about the impact it might have on his own inheritance. This demonstrates the meticulous nature of property rights and familial roles prevalent in ancient Israelite society.

What’s fascinating is that the kinsman’s hesitation touches on the larger theme of legacy. He fears the marriage would lead to the birth of children who would claim his land, drastically reshaping his family’s future. This pure, utilitarian concern starkly contrasts with Ruth and Boaz’s more generous love story. Their union is a celebration of loyalty, devotion, and friendship, illustrated through Ruth's declaration of commitment to Naomi.

Throughout this narrative, we also catch glimpses of God’s providence. While one man retreats, another—Boaz—steps forward, willing to take on the responsibilities outlined in the law of Levirate marriage. This is believed to reflect God’s heart for inclusion and redemption. Plus, what’s astonishing is Ruth, a Moabite woman, becoming part of the ancestry of King David—and ultimately, the genealogies leading to Jesus—binding themes of unexpected grace and divine purpose.

So, as we consider why some might turn away when faced with obligations, this story invites readers to reflect on the values of love over inheritance and self-interest,ultimately reshaping our understanding of family and belonging.