Romans 10:19-20

19But I ask, did the people of Israel really understand? Yes, they did, for even in the time of Moses, God said, “I will rouse your jealousy through people who are not even a nation. I will provoke your anger through the foolish Gentiles.”

20And later Isaiah spoke boldly for God, saying, “I was found by people who were not looking for me. I showed myself to those who were not asking for me.”