system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] If no man can kill the witch king, then why bother with the army and why not just send the witch king to fight the entirety of Theoden's supposedly all men army'?

Sorry for that massive sentence?
gpt
Because it was a prophecy, not a special power he had. And because he still can only be in one place at any one time. And is vulnerable to fire. Afraid of it. And, in a an entire army, a *few* of those people are going to be able to overcome his fear aura, and swamp him. 

Besides, Sauron had a massive army. The biggest. Heck, *half* of his army was *way* bigger than any other army in the world. What, is he worried about throwing away orc lives to achieve his goals? 

Of course not.