The 2nd verse of Baqarah say: "this is the book", But wasn't the Quran sent down as a "revelation"?

Sources

• ✓ 2:2 · Al-Baqara

  2:2 · Muhammad Marmaduke Pickthall

  ذَٰلِكَ ٱلْكِتَٰبُ لَا رَيْبَ ۛ فِيهِ ۛ هُدًۭى لِّلْمُتَّقِينَ

  This is the Scripture whereof there is no doubt, a guidance unto those who ward off (evil).

• ✓ 76:23 · Al-Insaan

  76:23 · Muhammad Marmaduke Pickthall

  إِنَّا نَحْنُ نَزَّلْنَا عَلَيْكَ ٱلْقُرْءَانَ تَنزِيلًۭا

  Lo! We, even We, have revealed unto thee the Qur'an, a revelation;

• ✓ 17:106 · Al-Israa

  17:106 · Muhammad Marmaduke Pickthall

  وَقُرْءَانًۭا فَرَقْنَٰهُ لِتَقْرَأَهُۥ عَلَى ٱلنَّاسِ عَلَىٰ مُكْثٍۢ وَنَزَّلْنَٰهُ تَنزِيلًۭا

  And (it is) a Qur'an that We have divided, that thou mayst recite it unto mankind at intervals, and We have revealed it by (successive) revelation.

• ✓ Tafsir Ibn Kathir on 76:23

  Sunni

  Tafsir Ibn Kathir · 76:23

  Allah, the Exalted, expresses His favor to His Messenger ﷺ by what He has revealed to him of the majestic Qur'an, revealed in its entirety. He commands: “So be patient over the decree of your Lord.” This means: Just as I honored you with this revelation sent down to you, so also be patient with My decree and predestination. Know that He will guide you with excellent planning. Then He says: “And do not obey any sinner or ungrateful one among them.” This is a warning not to obey the disbelievers and hypocrites if they seek to turn you away from what has been revealed to you. Instead, convey faithfully what has come from your Lord and place your trust in Allah, for He will protect you from the people. The term 'sinner' refers here to one who is openly immoral in his deeds, while 'ungrateful' designates one who denies Allah in his heart. Next, He commands: “And remember the name of your Lord morning and evening,” meaning at the start and the end of the day. “And during part of the night, prostrate to Him and exalt Him a long night through.” This aligns with other verses commanding night prayer, such as in Surah Al-Isra’: “And from the night, pray with it as additional worship for you; maybe your Lord will raise you to a praised station,” and Surah Al-Muzzammil: “O you who wraps himself [in clothing], stand [to pray] at night except for a little, half of it or reduce it a little or add to it, and recite the Qur'an with measured recitation.” Then Allah reproaches the disbelievers and those like them who are obsessed with this worldly life, preoccupied entirely with it and neglecting the Hereafter behind their backs: “Indeed, those [who] love the immediate and leave behind them a heavy Day,” meaning the Day of Resurrection. He continues: “We created them and strengthened their forms.” As Ibn Abbas, Mujahid, and others explain, this means their original creation. “And if We will, We can replace them with others like them,” interpreted as: on the Day of Resurrection, We will resurrect them anew, transformed. This implies the principle of the first creation being evidence of resurrection. Some scholars like Ibn Zayd and Ibn Jarir read this as: “We can bring forth other peoples instead of them,” referring to substituting humanity altogether, as in other Qur'anic verses saying that Allah can destroy people and bring others in their place. Then Allah says: “Indeed, this is a reminder, so whoever wills may take to his Lord a way.” This points to the choice given by the Qur'an to whoever wishes to be rightly guided, to choose the path of guidance. “But you do not will except that Allah wills.” This means no one can guide himself, enter faith, or benefit himself unless Allah wills it. “Indeed, Allah is ever Knowing and Wise,” meaning He knows who deserves guidance and facilitates it for them, and who merits misguidance and turns them away, and He has perfect wisdom and compelling argument for His decisions. Finally, He concludes: “He admits whom He wills into His mercy, but the wrongdoers—He has prepared for them a painful punishment.” That is, He guides whom He wills and misleads whom He wills; whoever is guided none can misguide him, and whoever is led astray none can guide him. [End of Surah Al-Insan (Chapter 76) commentary.] [And Allah knows best.]

• ✓ Tafsir Ibn Kathir on 17:106

  Sunni

  Tafsir Ibn Kathir · 17:106

  Allah, the Exalted, informs us about His Mighty Book, which is the Glorious Qur'an, that it was revealed with truth—meaning it contains truth in its entirety. As He says elsewhere: "But Allah testifies to what He has sent down to you; He has sent it down with His knowledge" (An-Nisa 4:166), indicating that the Qur'an embodies Allah’s knowledge that He intended to make known, including His laws, commands, and prohibitions. The phrase "and with truth it has descended" further means that the Qur'an reached you, O Muhammad, preserved and protected without any corruption, no addition or subtraction. It came to you with complete truth, sent down by the Almighty, the Trustworthy, the Mighty, and the One whose command is obeyed in the highest assembly. When Allah says, "And We have not sent you except as a bringer of good tidings and a warner," this means, O Muhammad, you were sent to give glad tidings to those believers who obey you, and to warn those disbelievers who reject you. Regarding the phrase "and (as) a Qur'an which We have separated," one recitation reads it with a lightened pronunciation, meaning that We have detailed it — separated it — from the Preserved Tablet to the House of Honor (in the lowest heaven). Then it was sent down in portions, divided in stages, over twenty-three years to the Messenger of Allah (peace be upon him). This explanation is attributed by 'Ikrimah to Ibn 'Abbas. Ibn 'Abbas also said, regarding the reading with emphasis (shaddah) on "separated" (farraqnāhu), that it means the Qur'an was revealed verse by verse, explained and clarified. Therefore Allah commanded the Prophet to recite it to the people with deliberation and measured pace, delivering it to them gradually and in stages — a gradual revelation, piece by piece.