You know that indeed Lord Allah is severe in punishment, and indeed Allah is the Oft-Forgiving, Merciful.
Since Adhikr mentioned in verses 41: 41-43 is formed as the Splendid Book, whomever holdfasts and follows It, Lord will forgive their offenses happened before, whereas whoever hides and rejects It after receiving, Lord will take severe revenge against such hypocritical man and woman as well as Mushrik man and woman as explained in verses 9: 67-68. It is told in verses 15: 49-50: "Inform My servants that I am the Forgiving, the Merciful, and it is My punishment which is the painful punishment". The Arabic Quran reading Fujjar are hiding and rejecting Adhikr which is the Balance and Trust to keep the universe in its equilibrium. So Hell will be filled with them as explained in verse 15: 44. And those who received Lord’s Book Adhikr, if are repenting, disclosing their offenses, forming confirmed belief with Adhikr, and thus holdfast Lord by holding Adhikr, such will be admitted in Paradise with the believers as explained in verse 4: 146. See explanation 2: 38-39, 177; 4: 17-18 and 5: 93.