'This Generation' in the Bible

And the Lord said, To whom shall I liken the men of this generation? and to whom are they like?

For as Jonas was a sign to the Ninevites, so shall be the Son of man to this generation.

The queen of the south shall be raised up in the judgment with the men of this generation, and shall condemn them: for she came from the ends of the earth to hear the wisdom of Solomon; and, behold, more than Solomon here.

The Ninevite men shall rise up in the judgment with this generation, and condemn it: for they repented at the proclamation of Jonas; and, behold, more than Jonas here.

That the blood of all the prophets shed from the foundation of the world be required of this generation;

From the blood of Abel even to the blood of Zacharias perishing between the altar and house: yea, I say to you, It shall be required of this generation.

And first must he suffer many things, and be disapproved of by this generation.

Truly I say to you, That this generation should not pass away, even till all things should be.