I love in Acts 13 when Paul is reaching out to the Greeks that he indicates that their original target was the Jews. But when they rejected the gospel, they started focusing on those who weren't rejecting it. It's a great reminder that we shouldn't let OUR plans get in the way of GOD'S plans!
Acts 13:46 (ESV)
And Paul and Barnabas spoke out boldly, saying, "It was necessary that the word of God be spoken first to you. Since you thrust it aside and judge yourselves unworthy of eternal life, behold we are turning to the Gentiles."