God has made a promise of forgiveness and the highest reward to those who believe and perform good deeds.
9
Tafseer
'Abdullāh Ibn 'Abbās / Muḥammad al-Fīrūzabādī
تفسير : (allah hath promised those who believe) in muhammad and the qur'an (and do good works) and do acts of obedience regarding that which is between them and their lord: (theirs will be forgiveness) of their sins in this world (and immense reward) in paradise.
Jalāl al-Dīn al-Maḥallī
تفسير : god has promised those who believe and perform righteous deeds, an excellent promise: they shall have forgiveness and a great wage, that is, paradise.