The gist of the verse under discussion...
The gist of the verse under discussion, like other verses of forfeiture, is that disbelief and apostasy make the deeds ineffective, i.e., such deeds lose their power to make life blissful. On the other hand, 186 true faith and belief give life to the deeds and they create felicity, bliss and happiness in life.
If someone acquires true faith after disbelief, his deeds are given a new life and they become effective in making life blessed and happy (although they were forfeited and ineffective before) . Likewise, if he apostatizes after having been a believer, all his deeds become dead, null and void; they cannot make life in this world or in the Hereafter happy.
Thereafter, if he leaves his apostasy and comes back to the fold of Islam, it is hoped that his deeds will be revived; but if he dies in the apostasy, the forfeiture will…