Matthew 24:30 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.
31 And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.”
Regardless of how one interprets the Greek word 'ge' (whether it refers to the land of Israel in 70 A.D. or to the entire world), I think many interpreters may be overlooking something important in verse 30----particularly the phrase, 'then shall all the tribes of the earth mourn'.
The text doesn’t say that only 'some' of the tribes will mourn, it clearly says 'all' the tribes of the earth shall mourn. That’s significant, because it means the scope of this mourning is universal --- that it includes every people group, not just a select portion.
The Greek word for 'tribes' here is 'phylē'. Notice how this same word is used elsewhere:
James 1:1 James, a servant of God and of the Lord Jesus Christ, to the twelve tribes (phylai) which are scattered abroad, greeting.
Revelation 7:9 After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds (phylē), and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands.”
In both of these examples, 'tribes' refers to the people of God---those within the covenant community, including believers in Christ. So when Matthew 24:30 says 'all' the tribes of the earth will mourn, that must logically include not only unbelieving nations but also those who belong to God’s people----the redeemed themselves.
If 'tribes of the earth' includes all people groups, then the mourning might not just be due to judgment, but also because of an awareness of Christ’s glory and majesty, which leads to both grief (over past rejection) and joy (over the fulfillment of God’s promises). The mourning, therefore, could be both a sign of repentance and a realization of divine victory.
This would mean the mourning is bad news for some---those who face judgment---but good news for others---those who see the fulfillment of their redemption.
And that ties naturally into verse 31, where the Son of Man sends out His angels to gather His elect from the four winds. Why couldn’t this gathering include those very tribes mentioned in verse 30? The two verses seem connected---the universal mourning in verse 30 leading to the universal gathering in verse 31---one event seen from two perspectives. Grief for the unrepentant, but glory and joy for the redeemed.