NET

30 Then the sign of the Son of Man will appear in heaven, and all the tribes of the earth will mourn. They will see the Son of Man arriving on the clouds of heaven with power and great glory.

Darby

30 And then shall appear the sign of the Son of man in heaven; and then shall all the tribes of the land lament, and they shall see the Son of man coming on the clouds of heaven with power and great glory.

KJV

30 “And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.”