The answer is: Amnon

2 Sam 13:7-14 - Half sister to Amnon, but whole sister to Absalom

In the bleak announcement surrounding the family's tragic tale, we find Amnon, David's firstborn son, in a heartbreaking violation against his sister Tamar. This particular story sparks interest for a few reasons. First, it reveals dark undercurrents even within one of the most celebrated families of the Old Testament. David, revered as a man after God’s own heart, had tumultuous familial strife, which beautifully illustrates that royalty does not immune one from personal failings or chaotic relationships.

In 2 Samuel 13, the narrative guides us into the layers of human emotions: lust, manipulation, anger, and ultimately betrayal. Tamar herself was not just a victim; she was also the beloved half-sister of Absalom. This connection added fuel to the fire of family rivalry. After Amnon’s heinous act, Absalom’s growing rage eventually led to an echoing cycle of retribution that altered the family dynamics forever.

What's fascinating is how Tamar represents resilience; after being shamed, she emerges with incredible strength, despite her tragic circumstances. Her identity shouldn’t simply be reduced to her victimhood, as the complexities of her character reveal hope beyond suffering. Furthermore, her story draws parallels to various narratives within different religious texts — the Shulammite woman in the Song of Solomon, for instance, embodies undeterred grace despite societal challenges.

In essence, this story captivates us by merging human experiences of anguish with profound themes of justice and family loyalty, reminding us about the complexity of our human condition.