Lukas 21:25-27

And there will be otot (miraculous signs) in the shemesh (sun) and the levanah (moon) and the kochavim (stars), and upon the earth there will be dismay among the Goyim, in perplexity at the sound of the sea and the waves; Bnei Adam will be fainting from pachad (terror) and from expectation of the things coming upon the Olam Hazeh, for the kochot (powers) of the heavens will be shaken. And then you will see the Bar Enosh and his Bias HaMoshiach on an Anan (Cloud) with gevurah (miraculous power of HASHEM) and kavod rav (great glory).