in order that the crime against the seventy sons of Jerubbaal might come to justice and their blood be avenged on their brother Abimelech and on the leaders of Shechem, who had helped him murder his brothers.
KJV
That the cruelty [done] to the threescore and ten sons of Jerubbaal might come, and their blood be laid upon Abimelech their brother, which slew them; and upon the men of Shechem, which aided him in the killing of his brethren.
ASV
that the violence done to the threescore and ten sons of Jerubbaal might come, and that their blood might be laid upon Abimelech their brother, who slew them, and upon the men of Shechem, who strengthened his hands to slay his brethren.