I Tell You the Truth Matthew 24:1-33 Signs of the End of the Age Part 2

Matthew 24:1-33
26-35: "So if anyone tells you, ‘There he is, out in the wilderness,’ do not go out; or, ‘Here he is, in the inner rooms,’ do not believe it.  For as lightning that comes from the east is visible even in the west, so will be the coming of the Son of Man.  Wherever there is a carcass, there the vultures will gather.  “Immediately after the distress of those days “ ‘the sun will be darkened, and the moon will not give its light; the stars will fall from the sky, and the heavenly bodies will be shaken.’“Then will appear the sign of the Son of Man in heaven. And then all the peoples of the earth will mourn when they see the Son of Man coming on the clouds of heaven, with power and great glory.  And he will send his angels with a loud trumpet call, and they will gather his elect from the four winds, from one end of the heavens to the other.  “Now learn this lesson from the fig tree: As soon as its twigs get tender and its leaves come out, you know that summer is near.  Even so, when you see all these things, you know that it is near, right at the door.  I tell you the truth, this generation will certainly not pass away until all these things have happened.  Heaven and earth will pass away, but my words will never pass away."

Lord, I must confess that I am puzzled by the statement, " this generation will certainly not pass away until all these things have happened."  when You are talking about Your second coming and in the area before You were talking about the Rapture of the church.  None of these things has happened you and it 2000 years plus later.  Even those who believe there is no rapture or Tribulation and Milenial Kingdom cannot explain this.
Yes, the disciples and followers of Jesus were persecuted, Jerusalem was destroyed, and when You died there was  darkness over all of the earth and lightning as well as an earthquake.  However; the moon still gives light and the stars have no all fallen to the earth.  The sun comes up every day.  Certainly ALL the people of the earth have not mourned Your coming in the clouds with great glory and You have no sent Your angels with the loud trumpet to gather all believers from the four winds.

Please, Lord, help me to understand.  I know the Holy Spirit will guide me into ALL truth!