Well they damn themselves through that statement. Christ didnt come to be argued over, or be discussed, He came, clearly stated He is ‘The way the truth and the Life’, "No one goes to the Father, but through Me’. If you reject Him, your are rejected from heaven.
Saint Ambrose, Doctor, (died A.D. 397):
“The Lord severed the Jewish people from his kingdom, and heretics and schismatics are also severed from the kingdom of God and from the Church. Our Lord makes it perfectly clear that every assembly of heretics and schismatics belongs not to God, but to the unclean spirit.” (Explanation of Luke)
Saint Fulgentius (died A.D. 533):
“Most firmly hold and never doubt that not only all pagans, but also all Jews, all heretics, and all schismatics who finish this life outside of the Catholic Church, will go into the eternal fire which was prepared for the devil and his angels.” (To Peter on the Faith)
Blessed Juliana of Norwich (died A.D. 1423):
“I knew in my faith that the Jews were accursed and condemned without end, except those who were converted.” (Sixteen Revelations of Divine Love)
Saint Peter Canisius S.J., Doctor, (died A.D. 1597):
“Outside of this communion, as outside of the ark of Noah, there is absolutely no salvation for mortals: not for Jews or pagans who never received the faith of the Church, nor for heretics who, having received it, corrupted it; not for schismatics who left the peace and unity of the Church; and finally neither for the excommunicated or those who for any other serious cause deserve to be put away and separated from the body of the Church like pernicious members. For the rule of Cyprian and Augustine is certain: he will not have God for his Father who would not have the Church for his mother.” (Catechismi Latini et Germanici)
Pax Iesus