Why did abimelech kill his brothers?

Abimelech killed his brothers to eliminate potential rivals for power after the death of their father, Gideon. He sought to establish himself as king and believed that by removing his siblings, he could secure his position without the threat of competition. This brutal act was driven by ambition and the desire for control over the people of Shechem, who supported him. His actions ultimately led to tragic consequences and conflict within the region.