God's Purpose in the Birth of the Messiah

Questions about why anyone should think the evidence for the resurrection is strong if Saul and the majority of first-century Jews found it insufficient, why Jesus came to to the Jews rather than another nationality, and how other nationalities came about through Noah.  

• Why should educated non-Christians today trust apologists’ claims that the evidence for the resurrection is strong if Saul and the overwhelming majority of first-century Jews found it insufficient?
• Why did Jesus come specifically to the Jews rather than to a Chinese family or African or any other nationality, and how did those other nationalities come about through Noah?