God lives in the Guru Granth Sahib - Guru Arjan Dev

Shabad About the Guru Granth Sahib 

I have heard the shabad Sab Sikhan Ko Hukam hai Guru Manyo Granth, which was said by Guru Gobind Singh and we repeat these words in the Ardaas. Today was the first day I attended Gurdwara during the quarantine due to Covid 19. And I heard a shabad about the Guru Granth Sahib. It is a shabad by Guru Arjan sung in Raag Sarang: Pothi Parmeshar Ka Thaan.  More writings on Where God Lives

ਸਾਰਗ ਮਹਲਾ ੫ ॥
सारग महला ५ ॥
Sārag mėhlā 5.
Saarang, Fifth Mehl:

ਪੋਥੀ ਪਰਮੇਸਰ ਕਾ ਥਾਨੁ ॥
पोथी परमेसर का थानु ॥
Pothī parmesar kā thān.
This Holy Book is the home of the Transcendent Lord God.

ਸਾਧਸੰਗਿ ਗਾਵਹਿ ਗੁਣ ਗੋਬਿੰਦ ਪੂਰਨ ਬ੍ਰਹਮ ਗਿਆਨੁ ॥੧॥ ਰਹਾਉ ॥
साधसंगि गावहि गुण गोबिंद पूरन ब्रहम गिआनु ॥१॥ रहाउ ॥
Sāḏẖsang gāvahi guṇ gobinḏ pūran barahm giān. ||1|| rahā▫o.
Whoever sings the Glorious Praises of the Lord of the Universe in the Saadh Sangat, the Company of the Holy, has the perfect knowledge of God. ||1||Pause||

ਸਾਧਿਕ ਸਿਧ ਸਗਲ ਮੁਨਿ ਲੋਚਹਿ ਬਿਰਲੇ ਲਾਗੈ ਧਿਆਨੁ ॥
साधिक सिध सगल मुनि लोचहि बिरले लागै धिआनु ॥
Sāḏẖik siḏẖ sagal mun locẖėh birle lāgai ḏẖiān.
The Siddhas and seekers and all the silent sages long for the Lord, but those who meditate on Him are rare.

ਜਿਸਹਿ ਕ੍ਰਿਪਾਲੁ ਹੋਇ ਮੇਰਾ ਸੁਆਮੀ ਪੂਰਨ ਤਾ ਕੋ ਕਾਮੁ ॥੧॥
जिसहि क्रिपालु होइ मेरा सुआमी पूरन ता को कामु ॥१॥
Jisahi kirpāl hoe merā suāmī pūran ṯā ko kām. ||1||
That person, unto whom my Lord and Master is merciful - all his tasks are perfectly accomplished. ||1||

ਜਾ ਕੈ ਰਿਦੈ ਵਸੈ ਭੈ ਭੰਜਨੁ ਤਿਸੁ ਜਾਨੈ ਸਗਲ ਜਹਾਨੁ ॥
जा कै रिदै वसै भै भंजनु तिसु जानै सगल जहानु ॥
Jā kai riḏai vasai bẖai bẖanjan ṯis jānai sagal jahān.
One whose heart is filled with the Lord, the Destroyer of fear, knows the whole world.

ਖਿਨੁ ਪਲੁ ਬਿਸਰੁ ਨਹੀ ਮੇਰੇ ਕਰਤੇ ਇਹੁ ਨਾਨਕੁ ਮਾਂਗੈ ਦਾਨੁ ॥੨॥੯੦॥੧੧੩॥
खिनु पलु बिसरु नही मेरे करते इहु नानकु मांगै दानु ॥२॥९०॥११३॥
Kẖin pal bisar nahī mere karṯe ih Nānak māʼngai ḏān. ||2||90||113||
May I never forget You, even for an instant, O my Creator Lord; Nanak begs for this blessing. ||2||90||113||

Information from Wikipedia on the Guru Granth Sahib: 

The Guru Granth Sahib (Punjabi: ਗੁਰੂ ਗ੍ਰੰਥ ਸਾਹਿਬ, pronounced [ɡʊɾuː ɡɾəntʰᵊ saːhɪb]) is the central religious scripture of Sikhism, regarded by Sikhs as the final, sovereign and eternal living Guru following the lineage of the ten human gurus of the religion. The Adi Granth, its first rendition, was compiled by the fifth Guru, Guru Arjan (1563–1606). Its compilation was completed on 29 August 1604[failed verification] and first installed inside Darbar Sahib in Amritsar on 1 September 1604.[1] Baba Buddha was appointed the first Granthi of the Darbar Sahib. Later, Guru Gobind Singh, the tenth Sikh guru, added all 115 hymns of Guru Tegh Bahadur, the ninth Sikh guru, to the Adi Granth and affirmed the text as his successor.[2] This second rendition became known as the Guru Granth Sahib, and is also sometimes referred to as the Adi Granth.[3][4]

The text consists of 1,430 angs (pages) and 5,894 śabads (line compositions),[5][6][7] which are poetically rendered and set to a rhythmic ancient north Indian classical form of music.[8] The bulk of the scripture is divided into sixty[5][6] rāgas, with each Granth rāga subdivided according to length and author. The hymns in the scripture are arranged primarily by the rāgas in which they are read.[6] The Guru Granth Sahib is written in the Gurmukhi script, in various languages, including Lahnda (Western Punjabi), Braj Bhasha, Kauravi, Sanskrit, Sindhi, and Persian. Copies in these languages often have the generic title of Sant Bhasha.[9]

The Guru Granth Sahib was composed predominantly by six Sikh gurus: Guru Nanak, Guru Angad, Guru Amar Das, Guru Ram Das, Guru Arjan, and Guru Teg Bahadur. It also contains the poetic teachings of thirteen Hindu Bhakti movement sant poets and two Sufi Muslim poets.[10][11]

The vision in the Guru Granth Sahib is of a society based on divine justice without oppression of any kind.[12][13] While the Granth acknowledges and respects the scriptures of Hinduism and Islam, it does not imply a moral reconciliation with either of these religions.[14] It is installed in a Sikh gurdwara (temple). A Sikh typically bows or prostrates before it on entering such a temple.[15] The Granth is revered as eternal gurbānī and the spiritual authority in Sikhism.[16]

More: https://en.wikipedia.org/wiki/Guru_Granth_Sahib