Different levels of guidance

Q: Is it correct to say that guidance is actually from Allah Ta'ala alone, and that when the Prophets gave us guidance, they themselves did not guide us, but it is Allah Ta'ala who guided us? Also, is it mentioned in the Quran that Allah Ta'ala told the Holy Prophet (sallallahu alayhi wasallam), "It is not you who guides them, it is Allah who guides"?

Respect for the Ambiyaa (alayhimus salaam)

Q: Nabi Aadam (alaihis salaam) was in heaven and becuase he disobeyed Allah he was thrown out of heaven. Now my question is that the father did a mistake and Allah is punishing the children who had nothing to do with the father's mistake. According to me Allah should have kept each and everyone in heaven first and tell them not to repeat the mistake which Aadam (alaihis salaam) did. If someone does the mistake then he should be thrown out.