2 Chronicles 21:4
Now when Jehoram was risen up to the kingdom of his father, he strengthened himself, and slew all his brethren with the sword, and divers also of the princes of Israel.
Cross-references
In 2 Chronicles 21:17, Jehoram's own sons are taken by invaders — poetic justice for his murder of his brothers.
2 Chronicles 21:2 names the brothers Jehoram later kills — providing the specific victims of his fratricide.
In 2 Chronicles 21:13, Elijah's letter directly references this same fratricide as a key sin of Jehoram.
In 2 Chronicles 22:10, Athaliah mirrors Jehoram's slaughter of his brothers — both seize power by killing family.
2 Chronicles 22:8 records Jehu killing the sons of Jehoram's murdered brothers — further judgment on the family line.
Genesis 4:8 depicts the first fratricide — Cain kills his brother Abel, just as Jehoram kills his brothers here.
Judges 9:5 records Abimelech murdering his seventy brothers to become king — an exact parallel to Jehoram's fratricide.
Judges 9:56 shows God repaying Abimelech for killing his brothers — the same divine justice Jehoram may face.
1 John 3:12 presents Cain as the archetype of evil murdering his brother — the same pattern as Jehoram's fratricide here.
2 Kings 10:7 reports the massacre of seventy royal sons — a similar purge of rivals to secure a throne.