1 Kings 2:32
And the Lord shall return his blood upon his own head, who fell upon two men more righteous and better than he, and slew them with the sword, my father David not knowing thereof, to wit, Abner the son of Ner, captain of the host of Israel, and Amasa the son of Jether, captain of the host of Judah.
Cross-reference
1 Kings 2:5 records David's earlier charge to Solomon about Joab's murders, which Solomon then explicitly references in verse 32.
In 1 Kings 2:44, Solomon uses the identical 'bring back on your own head' phrase for Shimei — a direct parallel.
Verse 33 completes the judgment: Joab's blood returns on his head while David's house receives peace — direct continuation.
Psalm 7:16 says mischief returns on the head of the wicked — the exact poetic justice applied to Joab here.
Judges 9:24 speaks of blood being laid on Abimelech — the same principle of bloodguilt falling on the murderer.
Judges 9:57 says God made evil return on the heads of Shechem — identical to Solomon's declaration about Joab.
2 Samuel 3:26 shows Joab secretly recalling Abner without David's knowledge, directly supporting Solomon's claim in 1 Kings 2:32 that David was unaware.
2 Samuel 3:27 records Joab's murder of Abner — the very crime for which Solomon pronounces judgment in this verse.
2 Samuel 3:37 confirms that the people recognized David's innocence in Abner's death, reinforcing Solomon's point in 1 Kings 2:32 that David was unaware.
In 2 Samuel 4:11, David similarly demands blood for the murder of a righteous man, mirroring Solomon's reasoning in 1 Kings 2:32 against Joab.
2 Samuel 20:10 records Joab's treacherous murder of Amasa, the very event Solomon references in 1 Kings 2:32 as justification for Joab's execution.
2 Samuel 1:16 has David declaring 'your blood be on your own head' — identical judgment language for murder used later on Joab.
2 Samuel 16:8 says God repaid David for bloodshed — same theme of divine retribution for bloodguilt as in Joab's case.
1 Chronicles 2:17 identifies Amasa as Abigail's son — the same Amasa Joab murdered, providing his genealogy.
Matthew 27:25 shows the crowd taking Jesus' blood on themselves, similar to blood returning on Joab's head—but as a self-curse, not divine justice.
Joshua 2:19 also says 'blood on his own head' about the spies' protection — same idiom of bloodguilt as in Joab's case.
Matthew 5:21 cites the law against murder, illustrating the principle of bloodguilt that underlies Solomon's declaration of Joab's punishment.
Leviticus 20:9 uses 'blood on his own head' for cursing parents — same idiom of bloodguilt applied here to Joab's murder.