1. Which comes first, when jinn and men are mentioned:
Allah says in surat al an3am
Likewise did We make for every Messenger an enemy,- evil ones among men and jinns
And in surah Rahman
O ye assembly of Jinns and men! If it be ye can pass beyond the zones of the heavens and the earth, pass ye! not without authority shall ye be able to pass!
We notice that in the first ayah here men are mentioned first, and the second ayah jinns are mentioned first. So why is this?
The first ayah is explaining about the enemies of the Prophets, the opposition that they faced. Its clear and known that the shaytans from the mankind were stronger in that, and the people of truth were exposed to more opposition and evil from these human ones. So that is why al-ins preceded here as in this topic it was more appropriate to mention them first.
The second ayah is constrasting whereby Jinns were mentioned first. Upon contemplating the meaning of this it was found that the reason for this here is to do with the level of knowledge in this. Its like a challenge in this ayah, if you can do this then do it. And who has more knowledge of it? its known that the jinns knowledge is more in this sphere, and they are more capable in it and therefore their mention preceded that of al-ins