Matthew 24:30

And 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]. [Dan 7:13; Rev 1:7]