Bhai Gopi Bhardwaj was a dedicated Sikh of the time of Guru Arjan Sahib. Once he, along with Bhai Bhiara, Bhai Tulsia Bhardwaj and Bhai Vesa Bhardwaj, visited Guru Sahib and asked people worship different gods as incarnations of God; whom should the Sikhs worship? Guru Sahib told them that God manifests Himself in different forms and attributes. We should worship only the Formless Almighty. But, we should not have any grudge against those who worship different gods. When God takes mercy on them they will also begin worshipping the Absolute One.
(Dr Harjinder Singh Dilgeer)