Yes, but according to my understanding "uncertain reality" has become certain by means of the written word about the Christ.
It is certain that people will beat "themselves in lamentation".NWT Is that something you want to be proud of?
"wail" I beat my breast or head in lamentation, lament, mourn, sometimes with acc. of person whose loss is mourned. definition Strong's Concordence
BEHOLD, HE IS COMING WITH THE CLOUDS, and every eye will see Him, even those who pierced Him; and all the tribes of the earth will mourn over Him. So it is to be. Amen.