Deepertruth: The Virgin Mary's Prophecies Concerning The Chastisment

What does the Virgin Mary say concerning the Catholic teaching of the coming chastisement and the Three Days of Darkness? Can we get a glimpse of these events from the biblical account? The human race is speeding to a time much like it was during the time of Moses and the 10 plagues of Egypt.  The ninth plague being that of Darkness (Exodus 10:21-29).

"Then the LORD said to Moses, "Stretch out your hand toward heaven that there may be darkness over the land of Egypt, a darkness to be felt."22 So Moses stretched out his hand toward heaven, and there was thick darkness in all the land of Egypt three days;23 they did not see one another, nor did any rise from his place for three days; but all the people of Israel had light where they dwelt."

Matthew 24:37-39, " As were the days of Noah, so will be the coming of the Son of man.38 For as in those days before the flood they were eating and drinking, marrying and giving in marriage, until the day when Noah entered the ark,39 and they did not know until the flood came and swept them all away, so will be the coming of the Son of man.