Chiefly in that they were intrusted with the oracles of God — The scriptures, in which are so great and precious promises. Other prerogatives will follow, Romans 9:4-5. St. Paul here singles out this by which, after removing the objection, he will convict them so much the more.
Related Commentaries of Romans 3:2
Romans 3:2
2 Much every way: chiefly, because that unto them were committed the oracles of God.