Matthew 24:29-30

29“Immediately after the tribulation of those days the sun will be darkened, and the moon will not provide its light, and the stars will fall from the sky, and the powers of the heavens will be shaken.

30And at that time the sign of the Son of Man [coming in His glory] will appear in the sky, and then all the tribes of the earth [and especially Israel] will mourn [regretting their rebellion and rejection of the Messiah], and they will see the Son of Man coming on the clouds of heaven with power and great glory [in brilliance and splendor].