The answer is: Simeon and Levi

Gen 34:25-26

In Genesis 34, we capture a rather intense moment involving Jacob's sons, Simeon and Levi, and the city of Shechem. After the prince, Shechem, rapes their sister Dinah, Jacob's sons are filled with rage and decide to take matters into their own hands. They hatch a cunning plan that leads to the slaughter of all the men of Shechem. This decisive act of violence can indeed spark a lot of debate about justice, revenge, and family loyalty.

Historically speaking, the names "Simeon" and "Levi" are quite significant. These two tribes would eventually play prominent roles in the history of Israel. Levi, in particular, was set aside for priestly duties. This connection draws attention to the gravity of their actions, as the very descendants of Levi were called to a life of spiritual guidance and service, a path that values mercy tremendously.

Interestingly, Simeon is often viewed as the more turbulent brother, quintessentially known for his fierce temper, while Levi also displayed dual characteristics of passion and zeal—something that resonates in the biblical narrative as both of them stand out for expressing loyalty to family—at any cost. This story mirrors the broader biblical themes that suggest a clash between living by the sword versus ushering in a higher call to peace and reconciliation, a theme fresh throughout Scripture.