User blog comment:Legolas halfelf/Silmarillion questions/@comment-64.178.145.35-20141025213820

1 In tolkien's mythos Manwe is the valar that best understands the mind and designs of Eru

2 Manwe is the brother of Morgoth, so you could justify it as Manwe is the oldest sing Morgorth is now evil

3 Manwe is the Anti-Morgoth so to speak, he doesn't understand evil, which makes him the perfect enemy for Morgoth