Preparing for a miracle requires active participation. Elisha the prophet guides a destitute widow in setting the stage for an extraordinary event in her home, instructing her to actively gather empty vessels. This physical preparation is a necessary step to allow the impending blessing to take hold and spread as widely as possible.
He directs her to step outside and borrow these containers [ביאור שטיינזלץ], specifically reaching out to all of her neighbors [מצודת דוד]. The necessity of this collection is rooted in the very nature of the miracle. While the core wonder involves a single jug of oil transforming into a continuous, flowing spring, the empty containers themselves must be made ready and worthy to receive the blessing. By involving her neighbors, she prepares their vessels to absorb the coming abundance [מלבי״ם].
Elisha concludes his directions with a crucial instruction: she must not settle for just a few containers, but rather gather as many as she possibly can [מצודת דוד, ביאור שטיינזלץ]. The purpose behind this request is to ensure that the miracle achieves its maximum potential immediately. Collecting a large number of vessels allows the widow to store enough oil to completely pay off her immediate debts, while also securing a livelihood to support her family long into the future [מלבי״ם].