2 Kings 25:25

25But in the seventh month
It is not altogether clear whether this is in the same year that Jerusalem fell or not. The wall was breached in the fourth month (= early July; Jer 39:2) and Nebuzaradan came and burned the palace, the temple, and many of the houses and tore down the wall in the fifth month (= early August; Jer 52:12). That would have left time between the fifth month and the seventh month (October) to gather in the harvest of grapes, dates and figs, and olives (Jer 40:12). However, many commentators feel that too much activity takes place in too short a time for this to have been in the same year and posit that it happened the following year or even five years later when a further deportation took place, possibly in retaliation for the murder of Gedaliah and the Babylonian garrison at Mizpah (Jer 52:30). The assassination of Gedaliah had momentous consequences and was commemorated in one of the post exilic fast days lamenting the fall of Jerusalem (Zech 8:19).
Ishmael son of Nethaniah, son of Elishama, who was a member of the royal family,
Heb “[was] from the seed of the kingdom.”
came with ten of his men and murdered Gedaliah,
Heb “and they struck down Gedaliah and he died.”
as well as the Judeans and Babylonians who were with him at Mizpah.
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