Truly, Y'shua will return soon and the signs in the heavens and the moon turning to blood are just some of the signs.
Perhaps the people of Israel coming to believe in Yeshua/Jesus as their Lord and Saviour/Messiah is the greatest sign.
Even so, come, Lord Yeshua
They will say, "BaRouch HaBa BaShem Adonai"
Blessed is he who comes in the name of the Lord!