Judges 9:5
And he went unto his father’s house at Ophrah, and slew his brethren the sons of Jerubbaal, being threescore and ten persons, upon one stone: notwithstanding yet Jotham the youngest son of Jerubbaal was left; for he hid himself.
Cross-reference
In Judges 9:18, Jotham recounts the same event—Abimelech killing seventy brothers on one stone.
Judges 8:30 explains why Abimelech could kill seventy brothers—Gideon had seventy sons.
2 Kings 11:2 shows Joash hidden from Athaliah's massacre, just as Jotham survived Abimelech's slaughter of seventy brothers.
Herod's massacre of Bethlehem's infants in Matthew 2:16 echoes Abimelech's slaughter of his brothers to eliminate a rival king.
In 2 Kings 10:7, Jehu beheads Ahab's 70 sons — a direct parallel to Abimelech killing 70 brothers on one stone.
In 2 Kings 10:17, Jehu also massacres a rival family to secure his throne, mirroring Abimelech's fratricide.
Athaliah's destruction of the royal offspring in 2 Kings 11:1 parallels Abimelech's killing of his brothers to eliminate rivals.
Jehoram kills all his brothers in 2 Chronicles 21:4, a direct parallel to Abimelech's fratricide to secure power.