It doesn't really matter how you interpret the scriptures Q, the fact of the matter is billions of Christians both past and present believe that Jesus was speaking to the whole world.
Matthew 24:13 But he who endures to the end shall be saved. 14 And this gospel of the kingdom will be preached in all the world as a witness to all the nations, and then the end will come.
This passage shows exactly the audience Jesus wanted to reach, and it seems to be going according to plan.
Ask a Jew or Rabbi about this part.
Billions of people believed the earth is flat/
Of course the end will come. Let's hope the preaching stops before it does.