1 Kings 18:40 has Elijah slaughtering the prophets of Baal—a strong parallel of a prophet carrying out God's judgment by execution, just as Samuel does to Agag.

Revelation 18:6 commands repaying Babylon as she repaid others—mirroring the exact retributive justice Samuel pronounces on Agag.

Jeremiah 48:10 curses those who keep back the sword from God's work; Samuel here does not hold back, exemplifying obedient execution of judgment.

Genesis 9:6 establishes blood for blood — Samuel's execution of Agag for killing many fulfills this principle.

Judges 1:7 mirrors the same principle: as Adoni-bezek did to others, so God repaid him—just as Agag's sword made women childless, so his mother becomes childless.

Leviticus 27:28 defines things devoted to the Lord as irredeemable—Agag was under the ban (herem), so Samuel's execution fulfills that law.

Numbers 24:7 prophesies Israel's king will be higher than Agag; Samuel's defeat of this Agag fulfills that prophecy of Amalek's subjugation.

Esther 3:1 introduces Haman the Agagite, a descendant of Agag, showing the Amalekite line continued despite this execution.

In 2 Samuel 21:9, Saul's descendants are executed for his sin, similar to Agag's execution for Amalek's sin — both are retributive justice.

Isaiah 34:6 uses similar sword-and-slaughter imagery for divine judgment against Edom, echoing Samuel's execution of Agag as God's judgment.

Matthew 7:2 states the measure-for-measure principle: the judgment you give returns to you, exactly what Samuel pronounces on Agag.

James 2:13 says judgment without mercy comes to those who showed no mercy—Agag's lack of mercy leads to his own merciless execution.

Joshua 10:26 describes Joshua executing five defeated kings—a parallel act of divine judgment against enemies, similar to Samuel's killing of Agag.

In Judges 8:20, Jether hesitates to kill the kings, contrasting with Samuel's direct execution of Agag here.

Numbers 14:45 records Amalek's victory over Israel, contrasting with their king's execution here.

Joel 3:7 says 'return your payment on your own head', a retribution principle like Samuel's poetic justice against Agag.

Revelation 16:6 declares that those who shed blood are given blood to drink—the same retributive logic as Agag's sword making women childless, so his mother is childless.

Exodus 17:11 shows the battle against Amalek—the same people whose king Samuel later hacks to pieces here.