How does Chapter 40 illustrate the concept of merging with the Guru upon seeking exclusive refuge?

Chapter 40 uses a powerful analogy to describe the union between a devotee and the Guru. It compares them to a river and an ocean, which have different names but are essentially one in substance. When a devotee seeks exclusive refuge in the Sadguru with true devotion, a merging occurs, similar to how a river meets the ocean and no difference remains. As this chapter explains, by dissolving the separate feelings of 'me' and 'you,' the Sadguru grants the devotee His own Guru-nature, making the unattainable attainable.