Jeremiah 41:3
Ishmael also killed all the Jews who were with Gedaliah at Mizpah as well as the Babylonian soldiers that he found there.
2 Kings 25:25
In the seventh month, Ishmael, the son of Nethaniah, the son of Elishama, of the king's seed, came with ten men and made an attack on Gedaliah, causing his death and the death of the Jews and the Chaldaeans who were with him at Mizpah.
Ecclesiastes 9:18
Wisdom is better than weapons of war, yet one sinner destroys much good.
Jeremiah 41:11-12
When Kareah's son Johanan and all the army commanders who were with him heard about all the crimes Ishmael son of Nethaniah did,
Lamentations 1:2
She weeps bitterly in the night. Her cheeks are wet from crying. Her lovers offer no comfort. Her friends have been false to her. They have become her enemies.