Can we offer the excuse of ignorance on Israel’s behalf?

^14-15 Now how can they call on one in whom they have never believed? How can they believe in one of whom they have never heard? And how can they hear unless someone proclaims him? And who will go to tell them unless he is sent? As the scripture puts it: ‘How beautiful are the feet of those who preach the Gospel of peace, who bring glad tidings of good things!’

¹⁶ Yet all who have heard have not responded to the Gospel. Isaiah asks, you remember, ‘Lord, who has believed our report?’