2) How come each group (deobandi, barelvi, & Salafi, etc..) consider only themselves to be Ahle Sunnah Wal Jamah?
3) Will none Ahle Sunnah groups like Jaberiya, Qaderiya, Mutazila go to hell forever or for only a certain time?
With respect to all of the deviant groups, such as’mutazila’
‘khawarij’ ‘jabriya’ and ‘jahmiya’ etc. is that they would go to hellfire not only because of their bad actions, like everyone else will but also because of their bad beliefs. The people of ‘ahlus sunnah wal jamah’ will be protected by their beliefs. Sometimes, if the beliefs are so corrupt that they take a person out to the fold of Islam then because of that, that person would be in hellfire forever. If a person is involved in innovative practices, because of its corrupt beliefs then the punishment would be proportionate to that.