You say: “The Pure Spirit has brought it down from your Lord with the Truth to make firm those who believed and as a Guidance and Herald to the true Muslims”.
The Pure Spirit mentioned in this verse is Jibreel who is Messenger from Angels as explained in verse 2: 1. Muslim means those who submit wholly to the Lord. They are heedful who transform their Jinn soulmate into a believer with Adhikr and keep the Lord Allah in his heart. But the Arabic Quran reading Fujjar who hide and reject Adhikr are falsely claiming and boasting that they are Muslim. Thus they are making other people hate Islam and the Book. So these worthless people will be admitted to the 7 doors of Hell by bearing the burden of every difficulty suffered by 1000 communities of the Lord’s creatures in this world as explained in verse 15: 44. See explanation 3: 101-102; 13: 27-28; 16: 2 and 89.