Jeremiah 41:3

Then Ishmael killed all the Judeans who were with Gedaliah at Mizpah, {along with} the Chaldeans who were found there, {the soldiers}.

2 Kings 25:25

But it happened in the seventh month that Ishmael the son of Nethaniah the son of Elishama from the offspring of the kingship came, and ten men with him, and they struck down Gedaliah so that he died with the Judeans and with the Chaldeans who were with him at Mizpah.

Ecclesiastes 9:18

Wisdom [is] better than weapons of war, but one sinner destroys much good.

Jeremiah 41:11-12

When Johanan the son of Kareah and all the commanders of the armies who [were] with him, heard all the evil that Ishmael the son of Nethaniah had done,

Lamentations 1:2

She weeps bitterly in the night, her tears [are] on her cheeks; she has no comforter among all her lovers. All her friends have been unfaithful to her; they have become her enemies.

Treasury of Scripture Knowledge

Summary

Ishmael also slew all the Jews that were with him, even with Gedaliah, at Mizpah, and the Chaldeans that were found there, and the men of war.

Bible References

General references

Jeremiah 41:11
When Johanan the son of Kareah and all the commanders of the armies who [were] with him, heard all the evil that Ishmael the son of Nethaniah had done,
2 Kings 25:25
But it happened in the seventh month that Ishmael the son of Nethaniah the son of Elishama from the offspring of the kingship came, and ten men with him, and they struck down Gedaliah so that he died with the Judeans and with the Chaldeans who were with him at Mizpah.
Ecclesiastes 9:18
Wisdom [is] better than weapons of war, but one sinner destroys much good.
Lamentations 1:2
She weeps bitterly in the night, her tears [are] on her cheeks; she has no comforter among all her lovers. All her friends have been unfaithful to her; they have become her enemies.