Quiddity
UndertheInfluenceofGiants
It's not entirely clear to me how "it was recently declared" is meant by pcarl and exchemist. A catholic has never been limited to assenting to that which has been declared. There are things now that haven't been declared in that regard and a catholic is still bound to it. Sensus Fidei has always been an active sense within Catholics that guides its everyday faculties and that is very much ingrained in what we believe.
So, if, for example, a person believes that papal infallibility was nonexistent prior to its declaration, then I (along with a hefty historical analysis) would implore them to take a more nuanced approach to it.
John Henry Newman touches on this:
Those who deny dogmatic progress in the life of the Church only manifest once again their adherence to a non-historical orthodoxy. For an authentic development of doctrine has taken place in the life of the Church, and it involves not only new philosophical-theological expression for the revealed truths that were always explicitly believed (say, the divinity of Christ) but also the folding of aspects of doctrine (e.g., the canon of Scripture, the number of the sacraments, the hypostatic union, the immaculate Conception of the Mother of God, the particular judgement, et.) under the guidance of the Holy Spirit leading the faithful to a greater understanding of the supernatural mysteries revealed in Jesus Christ.
So, if, for example, a person believes that papal infallibility was nonexistent prior to its declaration, then I (along with a hefty historical analysis) would implore them to take a more nuanced approach to it.
John Henry Newman touches on this:
Those who deny dogmatic progress in the life of the Church only manifest once again their adherence to a non-historical orthodoxy. For an authentic development of doctrine has taken place in the life of the Church, and it involves not only new philosophical-theological expression for the revealed truths that were always explicitly believed (say, the divinity of Christ) but also the folding of aspects of doctrine (e.g., the canon of Scripture, the number of the sacraments, the hypostatic union, the immaculate Conception of the Mother of God, the particular judgement, et.) under the guidance of the Holy Spirit leading the faithful to a greater understanding of the supernatural mysteries revealed in Jesus Christ.