They were confused by the diverse incarnations in which God was worshipped. The Guru said, “All forms and attributes are God`s, yet He transcends them. You should, therefore, worship only the Absolute One. At the same time you must abjure rancour towards those who have a different way of worship.” Bhai Gopi and his companions, says Bhai Mani Singh, Sikhan di Bhagat Mala, took the Guru`s precept and were blessed (Varan, XI. 20).
References :
1. Main Singh, Bhai, Sikhan di Bhagat Mala. Amritsar, 1955
2. Sanlokh Singh, Bhai, Sri Gur Pratap Suraj Granth. Amritsar, 1927-33
3. Macauliffe, Max Arthur, The Sikh Religion. Oxford, 1909