The whole world, the forces of nature, our bodies, they all function in harmony with the laws of nature. By seeing the effects of the laws of nature, we are led back to the cause.  Samsaara is likened to the tree which can be cut down, through developing vairagya and viveka. This Samsaara we experience is only there because of our ignorance of our true nature. Once we see that there is a cause behind every effect, we see that it is Ishvara who is the cause behind everything.
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