Charles Ellicott Commentary Jeremiah 41:2

"Then arose Ishmael the son of Nethaniah, and the ten men that were with him, and smote Gedaliah the son of Ahikam the son of Shaphan with the sword, and slew him, whom the king of Babylon had made governor over the land." — Jeremiah 41:2 (ASV)

Then arose Ishmael. —The narrative suggests the thought that, as in the massacre of Glencoe, the guests murdered their host at the very time when he was receiving them with open arms.