The word takht means "bed", "seat", or "podium" in Arabic. It often refers the resting place for a king, the ruler, the emperor. The question is where is the resting place for God. Where does he sit?
In Ramkali, Guru Arjan Dev says, "O king of kings, with the greatest court, final justice, the real doer of everything, you sit on the true throne."
ਵਡਾ ਤੇਰਾ ਦਰਬਾਰੁ ਸਚਾ ਤੁਧੁ ਤਖਤੁ ॥
Vaddaa Thaeraa Dharabaar Sachaa Thudhh Thakhath ||
वडा तेरा दरबारु सचा तुधु तखतु ॥
The Darbaar of Your Court is glorious and great. Your holy throne is True.
Guru Amardas says, "Your created your own throne in the ethers and the ethers.
ਆਪੇ ਤਖਤੁ ਰਚਾਇਓਨੁ ਆਕਾਸ ਪਤਾਲਾ ॥
Aapae Thakhath Rachaaeioun Aakaas Pathaalaa ||
आपे तखतु रचाइओनु आकास पताला ॥
He Himself established His throne, in the Akaashic ethers and the nether worlds.
In Raag Asa, Guru Nanak says that the one who sits on the throne is imbued in the five elements.
ਤਖਤ ਨਿਵਾਸੀ ਪੰਚ ਸਮਾਇ ॥
Thakhath Nivaasee Panch Samaae ||
तखत निवासी पंच समाइ ॥
The one on the throne is imbued in five (elements)
So every element, every molecule, every atom is His throne. If you recognize, God resides in your heart. So my own heart is God's throne. Every heart is God's throne.
ਸੋ ਦਰੁ ਕੇਹਾ ਸੋ ਘਰੁ ਕੇਹਾ ਜਿਤੁ ਬਹਿ ਸਰਬ ਸਮਾਲੇ ॥
So Dhar Kaehaa So Ghar Kaehaa Jith Behi Sarab Samaalae ||
सो दरु केहा सो घरु केहा जितु बहि सरब समाले ॥
Where is that Gate, and where is that Dwelling, in which You sit and take care of all?
And he answers this question in the end:
ਸੋ ਪਾਤਿਸਾਹੁ ਸਾਹਾ ਪਾਤਿਸਾਹਿਬੁ ਨਾਨਕ ਰਹਣੁ ਰਜਾਈ ॥੨੭॥
So Paathisaahu Saahaa Paathisaahib Naanak Rehan Rajaaee ||27||
सो पातिसाहु साहा पातिसाहिबु नानक रहणु रजाई ॥२७॥
He is the King, the King of kings, the Supreme Lord and Master of kings. Nanak remains subject to His Will. ||27||
Guru Nanak concludes that it is not "he" that is singing, it is really through the command of the supreme being that he is singing. Every heart is God's throne, and from there he makes Guru Nanak sing. Every heart is singing ... Sabhai Ghat Raam Bolai. Every song is under His direction.