The Day all secrets will be disclosed.
“The Day” mentioned here is the Day of Judgement. On that Day, every moment of this worldly life after the age of fifteen will be revealed to him. The believer, who considers Allah as Impartial, deletes—even from this world—the evils that have been inscribed in his book of deeds fastened around his neck, as explained in verses 17: 13–14, before understanding Adhikr. For that, he follows the mode of prayer and lifestyle mentioned in verses 7: 205–206. The Arabic Qur’an–reading Fujjar who do not do so, while reading the book of deeds on the Day of Judgement, will wail: “Woe to me! What a book is this; it leaves nothing, small or great, unless it has been recorded,” as explained in verse 18: 49. See explanation 25: 68–70; 39: 53–59; and 45: 28–35.