(Thou warnest only) your warning by means of the Qur'an benefits only (him who followeth the Reminder) i.e. the Qur'an and acts upon its teachings, like Abu Bakr and his fellow believers (and feareth the Beneficent in secret) and works for the Beneficent even though he does not see him. (To him bear tidings of forgiveness) of his sins in the life of this world (and a rich reward) and a fair reward in Paradise.