A stark contrast emerges between a physical reality of severe shortage and a divine promise of a miracle. A large group of hungry students needs to be fed, but the available food is entirely insufficient [מדוד ועד לחורבן].
Tasked with distributing the meal, the servant is astonished by the tiny amount in his hands. The primary approach among commentators is that he wonders how such meager rations could possibly sustain a hundred men, convinced that the supply will fall drastically short [מצודת דוד, ביאור שטיינזלץ]. Adding to this perspective, [רש״י] explains that the servant's disbelief is focused on each individual loaf of bread, looking at the single items and questioning how they could ever be enough.
Despite the situation defying all natural logic, the prophet instructs his servant to serve the people. This command rests entirely on a promise from God. The divine assurance guarantees that not only will the small amount of food be enough for every person present to eat and be fully satisfied, but there will even be food left over after the meal is finished [מצודת דוד, ביאור שטיינזלץ].