John Wesley on Isaiah 11:4

Judge - Defend and deliver them. Reprove - Or condemn their malicious enemies. Thy rod - With his word, which is his scepter, and the rod of his power, Psal 110:2, which is sharper than a sword, Heb 4:12, by the preaching whereof he subdued the world to himself, and will destroy his enemies, 2Thes 2:8. This he adds farther, to declare the nature of Christ's kingdom, that it is not of this world.