נחמיה, פרק ד׳, פסוק ה׳

The physical exhaustion of those rebuilding the city walls was compounded by a paralyzing fear of a sudden assault. The surrounding enemies hatched a highly secretive plan to launch a surprise attack against the Jewish workers, aiming to bring the construction to a complete halt.

The adversaries meticulously plotted the stages of their ambush to ensure total unawareness. They designed a two-fold strategy of deception: first, they kept their plot in absolute secrecy so the builders would have no prior knowledge of the danger, and second, they planned to strike from hidden positions so their approach would remain completely unseen [מלבי"ם]. The intended surprise was so extreme that the attackers expected to infiltrate right into the very center of the construction groups before anyone even noticed their presence [מצודת דוד].

The ultimate objective of this violent ambush was to permanently stop the building project. Beyond the immediate physical destruction and the murder of the workers, the attack carried a deeply psychological motive. The enemies reasoned that once the surviving Jews witnessed their fellow workers killed specifically for participating in the construction, terror would take over, and they would abandon the project entirely [מצודת דוד].