איוב, פרק מ״א, פסוק ט׳

The Leviathan is protected by an impenetrable, sealed armor formed by the absolute grip of its individual shields. To illustrate this, the imagery of siblings standing close together is used as an idiom to depict identical, perfectly matched objects. This alignment mirrors the way the parallel loops of the Tabernacle were designed to correspond to one another perfectly [מצודת ציון]. In practical terms, every single scale is firmly secured to the one right next to it [ביאור שטיינזלץ].

These individual pieces lock together to form a single, unbroken layer of defense [ביאור שטיינזלץ]. They are packed with such incredible density that not even a breath of wind can slip between them [אלשיך]. Once joined, they are impossible to pull apart, leaving absolutely no gap or division [מצודת ציון].

The primary approach among commentators notes an intentional repetition in how this physical bond is described. By layering multiple concepts of attachment and unity, the poetic imagery is magnified. It paints a vivid picture of a massive creature whose armored plates are bound with such extraordinary strength that they remain forever inseparable [רש״י, מצודת דוד].