2 Chronicles 28:6
“For Pekah the son of Remaliah slew in Judah an hundred and twenty thousand in one day, which were all valiant men; because they had forsaken the Lord God of their fathers.”
He sacrificed also and burnt incense in the high places, and on the hills, and under every green tree.
Wherefore the Lord his God delivered him into the hand of the king of Syria; and they smote him, and carried away a great multitude of them captives, and brought them to Damascus. And he was also delivered into the hand of the king of Israel, who smote him with a great slaughter.
For Pekah the son of Remaliah slew in Judah an hundred and twenty thousand in one day, which were all valiant men; because they had forsaken the Lord God of their fathers.
And Zichri, a mighty man of Ephraim, slew Maaseiah the king’s son, and Azrikam the governor of the house, and Elkanah that was next to the king.
And the children of Israel carried away captive of their brethren two hundred thousand, women, sons, and daughters, and took also away much spoil from them, and brought the spoil to Samaria.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“And the men of Israel turned again upon the children of Benjamin, and smote them with the edge of the sword, as well the men of every city, as the beast, and all that came to hand: also they set on fire all the cities that they came to.”
“Where the people of Israel were slain before the servants of David, and there was there a great slaughter that day of twenty thousand men.”
“And they pitched one over against the other seven days. And so it was, that in the seventh day the battle was joined: and the children of Israel slew of the Syrians an hundred thousand footmen in one day.”
“But Pekah the son of Remaliah, a captain of his, conspired against him, and smote him in Samaria, in the palace of the king’s house, with Argob and Arieh, and with him fifty men of the Gileadites: and he killed him, and reigned in his room.”
“In the two and fiftieth year of Azariah king of Judah Pekah the son of Remaliah began to reign over Israel in Samaria, and reigned twenty years.”