Some people try to justify their intentional bad acts by giving the example of Hajaj bin Yusuf. While he was on his death bed, his mother sat near him and said, " I would pray to Allah (s.w.t) to forgive you, but I am not sure if Allah (s.w.t) would forgive you after all your past sins (killing of Muslims).
He requested his mother to bring a knife and then asked her to cut one of his fingers. She trembled and said she couldn’t do it.
He replied, " You are my mother and you cannot punish me because you love me, but Allah (s.w.t) loves me infinite times more than you then how could He punish me"
Well, we don’t know about Allah’s (s.w.t) decisions as our existence has no status in front of HIM. But if that were the case that Allah can’t see his people in pain then HE wouldn’t have allowed Yazid to Martyr HIS beloved Hazrat Imam Hussain (r.a) so painfully and hurt his relatives during Karbala. Also not a single person in the universe has seen more mental and physical pain then our prophet (saw) who doesn’t deserve any pain on the basis of his deeds, unlike any other person in the world. Therefore, I strongly believe that there is a GREAT wisdom behind every decision of Allah (s.w.t) which is beyond our mental capabilities, so we should not think of any sin to be smaller but think of HOW GREAT is ALLAH (SWT) who is watching us, as we never know which of our sin HE dislike so much that He might not allow us to enter Jannah. Similarly even a minor good act can help us to be allowed to Jannah but that too is not our choice and the right of this judgment only belongs to Allah (s.w.t).
May Allah (s.w.t) bless us all towards the right path. Ameen.