Dr. Idinopulos writes about the book "A Guest in the House of Israel":
What is the basic Christian theological anti-Judaic teaching of contempt? Williamson's answer is Supersessionism: that the revelation of God in Jesus Christ surpassed and therefore canceled the on-going validity of revelation of God to the Biblical people of Israel.
Would you respond by pointing to St. John's Revelations and say that revelation continued among the Church, which is in turn a continuation of Israel?
The teaching of contempt is forcefully conveyed in the message that Israel is judged, found guilty, and was eternally punished for rejecting her own messianic King, Jesus proclaimed the Christ (Messiah).
How can that be if the Church considered itself Israel? Or did some Church fathers really talk that way?
His mention about "eternally" must be wrong because St. John Chrysostom predicted their salvation.