User blog comment:ImperiexSeed/Supernatural Mysteries/@comment-3481504-20120312215145/@comment-3481504-20120313223743

I disagree, I thought this was obvious but I guess not. Aspects like soul reading, knowledge of all Prophets, etc are more innate, not motivated by power.

This is shown in "Mommy Dearest" when Cas, while with no power due to Eve, is still able to read the Starship's mind.