Athanasius Kircher, in the 15th century, wrote of the fire that will clean us of our sin. He tells us that the fire will be so great that there will be no place for the ashes to fall and no place for the smoke to fill. So these ashes, this smoke, must drift back to now, a place before the fire.
That the Lord in his wisdom has given those ashes wings so that we will, if only out of fear, keep the covenant.
He tells us the ashes are even now falling
are drifting back and fluttering downward.
He tells us that they are attracted to the flames from whence they came.