Council of Trent, Session 5: "That our Catholic faith, without which it is impossible to please God..."
Vatican Council, Session 3: "Since, then, without faith it is impossible to please God and reach the fellowship of his sons and daughters, it follows that no one can ever achieve justification without it, neither can anyone attain eternal life unless he or she perseveres in it to the end."
Without the Catholic faith, it is impossible to please God. Pagans do not have the Catholic faith. Jews do not have the Catholic faith. Muslims do not have the Catholic faith. Buddhists do not have the Catholic faith. Protestants do not have the Catholic faith. Greeks do not have the Catholic faith. All other heretics do not have the Catholic faith. Therefore Pagans, Jews, Muslims, Buddhists, Protestants, Greeks, and all other heretics please not God. Who then would dare say they could be saved?
Council of Trent, Session 6: "And whereas the Apostle saith, that man is justified by faith and freely, those words are to be understood in that sense which the perpetual consent of the Catholic Church hath held and expressed; to wit, that we are therefore said to be justified by faith, because faith is the beginning of human salvation, the foundation, and the root of all Justification; without which it is impossible to please God, and to come unto the fellowship of His sons."
That's not Feeneyism. That's Catholicism. People like Telesphorus are the descendants of modernists like Francis Sullivan who never accepted the Church's teaching on salvation, and made up excuses to deny it.