2 Kings 25:23; 2 Kings 25:25

23 When all the captains of the forces, they and their men, heard that the king of Babylon had appointed Gedaliah governor, they came to Gedaliah to Mizpah, namely, Ishmael the son of Nethaniah, and Johanan the son of Kareah, and Seraiah the son of Tanhumeth the Netophathite, and Jaazaniah the son of the Maacathite, they and their men.

25 But it came about in the seventh month, that Ishmael the son of Nethaniah, the son of Elishama, of the royal family, came with ten men and struck Gedaliah down so that he died along with the Jews and the Chaldeans who were with him at Mizpah.