User blog comment:ImperiexSeed/Supernatural Mysteries/@comment-3481504-20120314204355/@comment-1509826-20120314215435

Like I said they probably come with the job, and the swine flu outbreak was pesttilences doing not his, and we don't know if he can manipulate perception one the same level war can, I mean war was about to drive off at the end, but the hullicinations weres still going to remain, so his range must miles long.

Lucifer also can't walk the earth without a vesel, and he can't utilise his full power without his true vessel, so sure he could do what the horsemen could, but it would requirte him to burn up energy, and force others to say yes, and travel alot, and he was busy with other things, he didn't have the time to do it all himself, so it was just easer for him to have the horsemen do it.

And this is just specuilation but I bet he was worried that if he didn't give them a job, they would go and join michael, and they were to powerful for lucfier to have them against them, after all he already had all of heven against him, and hunters, so to stop him arming Michael with some of the most powerful beings in existance, it was best to have them work for him.