KJV:
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.
NASB:
But I say, surely Israel did not know, did they? First Moses says, "I WILL MAKE YOU JEALOUS BY THAT WHICH IS NOT A NATION, BY A NATION WITHOUT UNDERSTANDING WILL I ANGER YOU."