The caravan of merchants of words is on its way.

This line beautifully suggests that the time for mere words is fleeting. It's like a caravan of 'word merchants' passing by – those who deal only in talk, theories, or superficial understanding. The underlying message, especially when paired with "O mind, engage in the trade of devotion," is a gentle reminder not to get lost in endless discussions or intellectual debates about spirituality. Instead, it encourages us to move beyond just words and truly immerse ourselves in the practice of devotion and self-realization. It's an invitation to shift from theoretical knowledge to heartfelt experience, because the caravan of just talking will eventually move on, leaving true seekers behind.