Could the light in Lord Krishna & Guru Nanak be the same. Read the verses from granth sahib. These verses praise guru nanak as a supreme messenger of god. त्रेतै तै माणिओ रामु रघुवंसु कहाइओ ॥ In the Silver Age of Traytaa Yuga, You were called Raam of the Raghu dynasty. दुआपुरि क्रिसन मुरारि कंसु किरतारथु कीओ ॥ In the Brass Age of Dwaapur Yuga, You were Krishna; You killed Mur the demon and saved Kans. उग्रसैण कउ राजु अभै भगतह जन दीओ ॥ You blessed Ugrasain with a kingdom, and You blessed Your humble devotees with fearlessness. कलिजुगि प्रमाणु नानक गुरु अंगदु अमरु कहाइओ ॥ In the Iron Age, the Dark Age of Kali Yuga, You are known and accepted as Guru Nanak, Guru Angad and Guru Amar Das. It is firmly believed that the light in each sikh guru was same thats why we sometimes refer guru gobind as 10th Nanak but can it be possible that Nanak was Krishna in Dwaapar yug. Express your views on this issue.