SQL & PL/SQL :: Get List Of Values Which Is Not The Given List?

I want to get the list of values which is not the given list .

I have the below data in my emp table

SQL> select emp_id from emp;

EMP_ID
----------
101
102
103
104
105
106
108
110
120
220
225

11 rows selected.

But I need to display the values from the list of values which are not in the emp table . So the result will be '3000,3002,3003'.

SQL> select emp_id from emp where emp_id ?;
EMP_ID
----------
3000
3002
3003