A moment of sudden exposure turns a secret mission into a desperate race for survival. Jonathan and Ahimaaz were waiting secretly in the area of En-rogel when an anonymous young man unexpectedly spotted them [מצודת דוד, אברבנאל]. The simple fact that the two men were lingering outside the city limits is likely what raised the observer's suspicions [ביאור שטיינזלץ]. Following the discovery, the young man hurried to report their location to Absalom, who immediately dispatched men to capture them [אברבנאל].
Fortunately, the spies sensed that they had been noticed. This crucial awareness, which gave them the brief window of time needed to flee, was a clear act of divine providence, showing that God was actively watching over them [מלבי״ם]. Moving quickly, they escaped from En-rogel and made their way toward the village of Bahurim [מצודת דוד, ביאור שטיינזלץ].
Upon reaching the village, they sought refuge at the home of a known supporter [מצודת דוד]. In a stroke of perfect timing, the courtyard of this specific house contained a well, providing an ideal, makeshift hiding spot. The men immediately climbed down into the well to conceal themselves from the approaching pursuers [אברבנאל, ביאור שטיינזלץ]. Finding a home with an accessible well at the exact moment they needed to vanish is highlighted as yet another instance of the divine providence guiding and protecting their journey [מלבי״ם].