'Brothers' in the Bible

He said, “They were my brothers, the sons of my mother. As the Lord lives, if only you had let them live, I would not kill you.”

Then he went to his father’s house at Ophrah and murdered his brothers the sons of Jerubbaal, seventy men, [in a public execution] on one stone. But Jotham the youngest son of Jerubbaal was left alive, because he had hidden himself.

so that the violence done to the seventy sons of Jerubbaal (Gideon) might come [on the guilty], and that their [innocent] blood might be laid on Abimelech their brother, who had killed them, and on the leaders of Shechem, who strengthened his hands (encouraged him) to kill his brothers.

In this way God repaid the wickedness of Abimelech, which he had done to his father [Jerubbaal] by killing his seventy brothers.

Then Jephthah fled from his brothers and lived in the land of Tob; and worthless and unprincipled men gathered around Jephthah, and went out [on raids] with him.

When their fathers or their brothers come to complain to us, we shall say to them, ‘Give them to us voluntarily, because we did not take a wife for each man of Benjamin in battle, nor did you give wives to them, for that would have made you guilty [of breaking your oath].’”