What does it mean that God has recorded 'everything in a Book' in An-Naba 78:29?

Answer

An-Naba 78:29 states, 'Yet everything We have recorded in a Book, set down in full' (wa kulla shayʾin aḥṣaynāhu kitāban). The verb 'aḥṣaynāhu' means God has counted, enumerated, and comprehensively encompassed all things, and 'kitāban' means He has written it down precisely. Al-Ṭabarī explains that God enumerated and inscribed everything — the deeds of the disbelievers and all else — so that it is preserved as evidence against them on the Day of Judgment. Al-Qurṭubī adds that this recording takes place both in the Preserved Tablet (al-Lawḥ al-Maḥfūẓ) and in the registers kept by the recording angels, ensuring that the final accounting is established with perfect justice and that nothing is overlooked. The verse functions as a direct answer to the denial in verses 27–28: although the disbelievers rejected the very idea of accountability, the reality is that nothing escapes God's knowledge or record. Al-Saʿdī emphasizes that even the smallest matter is written down, so the reckoning will be exact. The point is reassurance of divine justice — every deed, large or small, is documented and will be recompensed without error or omission.