18 But I ask, have they not heard? Yes, they have: Their voice has gone out to all the earth, and their words to the ends of the world. 19 But again I ask, didn’t Israel understand? First Moses says, “I will make you jealous by those who are not a nation; with a senseless nation I will provoke you to anger.” 20 And Isaiah is even bold enough to say, “I was found by those who did not seek me; I became well known to those who did not ask for me.” 21 But about Israel he says, “All day long I held out my hands to this disobedient and stubborn people!”