And the one who said to his parents: Fie upon both of you! Do you both promise me that I will be resurrected, while there are so many generations passed before? And they both sought Allah for help: Woe to you! You believe, indeed the promise of Allah is the Truth; then he tells: indeed It is nothing except the tales of ancestors.
The parents mentioned in this verse are the believers, while the son is disbeliever. When the parents advise the son that after the death, everyone will be resurrected for Day of Judgement, and on that Day everyone should answer before Lord about this worldly life after the age of 15 years; so you should lead a life here in that awareness. Then the son refuses the advice saying: fie, there have been many generations passed before me, and they have not yet been resurrected and returned to here, so what you are saying is only tales of ancestors. It is upon such children, the word of Lord is happened true as mentioned in the coming verse. The Fujjar who do not transform their Jinn soul mate in to believer with Adhikr will die witnessing against their soul that indeed they were disbelievers as explained in verse 7: 37. They will be gathered in the narrowed fire with their forefathers who have passed before them, and there they will be quarrelling, arguing and cursing each other as explained in verses 7: 38-39; and 38: 55-61. See explanation 16: 24; 18: 80-81; and 45: 25-26.