Human
Bellum omnium contra omnes
No difference I can call him Jesus or Isa, it is just the English equivalent to Arabic. Yes the injeel was altered by Paul's works and other men works who came 20 years after the Messiah. People who are born then dide after birth will go to Jannah, but those who survive are influenced by their parents.
Guiding will be better than destroying.
If you decide to use your personal WMD's with your knowledge on Christians then you are just asking to get beaten up.