Indeed earth has its own merits which not only provide carrier to spirit but helps one to purify self by retake the residual to liberate self for the cause,
But original chapter that helps one to purify self is Divinity with core base at self,
The best privilege of man lies in to evaluate self on the cord of divinity to match the truth with supreme personality for the cause,
Once divinity manifest that not only purifies the self but self becomes purifier for fellow beings that far above the limitations of Water, fire and air,
May Lord bless all,
Thanks please