(Muhammed) 47 : 2
وَالَّذِينَ آمَنُوا وَعَمِلُوا الصَّالِحَاتِ وَآمَنُوا بِمَا نُزِّلَ عَلَىٰ مُحَمَّدٍ وَهُوَ الْحَقُّ مِنْ رَبِّهِمْ ۙ كَفَّرَ عَنْهُمْ سَيِّئَاتِهِمْ وَأَصْلَحَ بَالَهُمْ
And those who believed and did righteous deeds, and believed with what is revealed upon Muhammed, while It is the Truth from their Lord, He will erase their evils from them, and He will reform their affairs.
This Verse gives Glad Tiding that those who become believers with the Truth Adhikr, which is the Permission of Lord to become believer as told in verse 10: 100, and are involved in the mission of conveying It to the entire mankind, all their evil deeds will be erased, and their deeds in future will be reformed. See explanation 25: 68-70; 29: 7; and 38: 24.