I would like to know if non believers would ever enter into paradise?
Non-believers will not enter paradise. That is, those who died in a state of kufr (disbelief) or shirk (polytheism) will not enter paradise. As for those who died upon the belief in the Oneness of Allah and followed the true and correct teachings of a Prophet of Allah, then they will enter paradise, for they are believers.
And Allah knows best,
Mufti Waseem Khan