The source material mentions that the worldly path is difficult. What role does the Guru's word play in navigating this path?

In Chapter 18, the worldly path is described as narrow and difficult due to distraction and the veil of ignorance. The text presents the Guru's word as the essential tool for navigating this challenging journey. It is specifically called a 'ray of light' and a 'smooth guide.' By serving the Guru and worshipping God with love, one attains the Guru's knowledge, with other methods being deemed hollow. The Guru's word provides the clarity and direction needed to overcome the obstacles of worldly existence.