Rom 10:16-21
In the Old Testament, the Israelites worshiped idols and God was jealous. So God said that He would preach the gospel to the Gentiles and make the Israelites jealous. (Deut 32:21)
Deut 32:21 They have moved me to jealousy with that which is not God; they have provoked me to anger with their vanities: and I will move them to jealousy with those which are not a people; I will provoke them to anger with a foolish nation.
As the Old Testament prophesied, God allowed the gospel to be preached to the Gentiles, making the Israelites jealous of those who did not believe that Jesus was the Christ. (Romans 10:16-21)
Romans 10:16 But they have not all obeyed the gospel. For Esaias saith, Lord, who hath believed our report? 17 So then faith cometh by hearing, and hearing by the word of God. 18 But I say, Have they not heard? Yes verily, their sound went into all the earth, and their words unto the ends of the world. 19 But I say, Did not Israel know? First Moses saith, I will provoke you to jealousy by them that are no people, and by a foolish nation I will anger you. 20 But Esaias is very bold, and saith, I was found of them that sought me not; I was made manifest unto them that asked not after me. 21 But to Israel he saith, All day long I have stretched forth my hands unto a disobedient and gainsaying people.