Mattityahu 24:30

And then will appear the Ot Bar Enosh (the Sign of the Son of Man) in Shomayim. All the tribes of kol haaretz (all the earth) will see the Bar Enosh Moshiach and his Bias, his Coming, on the ananim of Shomayim (clouds of glory of Heaven) with gevurah (power) and great kavod (glory).