Why we would like to do something like this, if jQuery (jQ) is anyway Global ?

gistfile1.js

// Global module
var myModule = (function ( jQ, _ ) {
  
    function privateMethod1(){
        jQ(".container").html("test");
    }

    function privateMethod2(){
      console.log( _.min([10, 5, 100, 2, 1000]) );
    }
    
    return{
        publicMethod: function(){
            privateMethod1();                
        }            
    };
   
// Pull in jQuery and Underscore
}( jQuery, _ ));

myModule.publicMethod();