Part of the mind of Ilúvatar

[Warm]

I have always been curious about Manwe's ability. Other than understanding the thought of Eru the best and being the voice of Eru's will, what do we see Manwe actually do? I can not really remember ever there being a contest between the two, or better yet, I can't really remember even an example of Manwe's ability or limitations. If they are equal opposites as in humble versus pride, perhaps there is a scale of will/power versus understanding or something similar.