At the first advent of Christ, His glory was veiled. People only saw the son of a poor carpenter. Only Peter, James and John, saw a glimpse of His glory in the transfiguration.
But at the Second Advent, things will change dramatically.
Everyone will see Him coming in all of His glory.
From those who executed Him, which is a phrase referring to all unbelieving Jews who will be living at the time of the Second Advent, to all tribes of the earth. And all tribes, is a reference to all of the gentile nations of the world.
Therefore, His glory will be so bright (far brighter than our daytime sun), that the entire planet, will be witness to the return of Christ.
And the response of people around the world? They will mourn.
10 “And I will pour out on the house of David and on the inhabitants of Jerusalem, the Spirit of grace and of supplication, so that they will look on Me whom they have pierced; and they will mourn for Him, as one mourns for an only son, and they will weep bitterly over Him, like the bitter weeping over a first-born. NASB
Some of the mourning will be of repentance. Many will be saved at that last minute of history.
But too, many, both Jew and gentile, will not repent, will not believe, but will grieve over their impending doom.
The word for mourn, ‘kopto,’ means to cut, or is a reference for extreme grieving or despair.
21 and they did not repent of their murders nor of their sorceries nor of their immorality nor of their thefts.
And all of this mourning, either through last minute panic and belief, or for fear of ones impending doom, will come from those who are about to die.
Those who are about to be delivered, mature believers who have managed to conceal themselves, are not included in this group. They will be celebrating in relief, as one celebrates when a huge burden of pressure is lifted from ones life.
But at the Second Advent, there will be billions of people worldwide, who have pursued the anti-christ and evil, and now in their last minutes of life, will have front row seats, to witness the one whom they have rejected as an unimportant person in life. And everyone will simultaneously realize their mistake.
And then, the lights of their lives, will go out in a dramatic and violent fashion.
We are still not finished with this verse!