Matthew 10

 I find it interesting that the twelve apostles were instructed that initially - 

"Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into any city of the Samaritans enter ye not:

6 But go rather to the lost sheep of the house of Israel.

7 And as ye go, preach, saying, The kingdom of heaven is at hand."  (Matthew 10:5–7)

My thoughts seem to go to - 

"...the time cometh that he shall manifest himself unto all nations, both unto the Jews and also unto the Gentiles; and after he has manifested himself unto the Jews and also unto the Gentiles, then he shall manifest himself unto the Gentiles and also unto the Jews, and the last shall be first, and the first shall be last."  (1 Nephi 13:42)