Matthew Poole and continuators on Numbers 25:8

8 And he went after the man of Israel into the tent , and thrust both of them through , the man of Israel and the woman through her belly : so the plague was stayed from the children of Israel.

Or, Brothel-house: For since they gave way to such leud practises, no doubt they singled out convenient places for their wickedness.

Which is no warrant for private persons to take upon them the execution of justice upon any, though the greatest, malefactors, because Phinehas was himself a man in great authority and power, and did this after the command given by Moses to the rulers to slay these transgressours, and in the very sight, and no doubt, by the consent, of Moses himself and also by the special instinct and direction of Gods spirit.

Or in her brothel-house, for the word is the same before used and translated tent, and it may be called hers, because she chose or used that place for her wicked purposes, as the rest doubtless did other places of like nature.

Either the pestilence or some other sudden and grievous mortality.

Marginal references: Or, brothel.