Many practitioners have the wrong impresion that spiritual evolution is a straight road to Enlightenment and that once they made the first steps on it they just need to keep walking until the blisfull goal is reached. But this is no different than the delusion that life will certainly end at 80 or 90 years old, and that nothing can interrupt it earlier.
Contrary to that vision, the right understanding of the Pure Land Path presupposes the awareness of two forms of impermanence: the impermanence of our phisical bodies and the impermanence of our so called, „spiritual evolution”. After we realize this simple, yet profound truth, we should not spend our time in vain, and quickly entrust to Amida Buddha. Untill we reach His Pure Land, we are never safe.