A vivid and powerful image emerges of the earth being treated like a massive garment. By grasping its very edges, one can shake it forcefully to cleanse it of the wickedness clinging to its fabric. This act of taking hold is a direct continuation of God questioning whether mortal man has ever commanded the dawn to grasp the earth [מצודת דוד, רמב״ן]. The resulting shaking causes the wicked to either fall away from the violent motion [מצודת ציון] or be completely removed as they scatter into hiding places [רלב״ג].
One approach grounds this imagery in the daily rhythm of nature. As the dawn rises, its light constantly shifts and spreads, effectively grabbing the edges of the earth. This wave of morning light acts like a person shaking the dust out of a piece of clothing. When the brightness washes over the world, those who do their evil work under the cover of darkness, such as thieves and robbers, are suddenly exposed. They are shaken out of their environments, forced to flee the light and retreat into their hiding holes [מלבי״ם, ביאור שטיינזלץ].
Looking beyond the daily sunrise, another perspective views this shaking as an act of historical judgment driven by divine providence. In this light, God commands the morning to usher in a decreed day of reckoning for the wicked [רמב״ן]. This forceful removal is designed to clear away evil while preserving the righteous. It mirrors historical events like the great Flood, where the wicked were destroyed and only Noah survived, serving as a clear testament to God's active guidance in the world [מצודת דוד].
A third approach places this dramatic cleansing at the end of days. In the ultimate future, God Himself will grasp the ends of the earth and shake out the wicked, much like a person holding the corners of a prayer shawl to shake it clean [רש״י]. At the time of the resurrection of the dead, the earth will undergo a final purification. The wicked, who dedicated their lives entirely to the material world and lack any lasting holiness, will be treated as mere waste. They will be shaken loose and fall away from the earth, exactly like dirt and small stones dropping from a vigorously shaken coat [אלשיך].