From hymn Book of the Worldwide Church of God (WVG)
23 Then the Lord spoke to Moses, saying, 24 “Speak to the children of Israel (incl. sojourners), saying: ‘In the seventh month, on the first day of the month, you shall have a sabbath-rest, a memorial of blowing of trumpets, a holy convocation. 25 You shall do no customary work on it; and you shall offer an offering made by fire to the Lord.’ ”
30 Then the sign of the Son of Man will appear in heaven, and then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of heaven with power and great glory.