Well, ever since the days of the Apostles, in fact. You know, the ones to whom Christ said: “I have many more things to tell you …] the Holy Spirit will take from what is mine and reveal it to you”? The ones who wrote the majority of what constitutes the New Testament of our Sacred Scripture?
That’s strange, because I thought all this came from the Council of Trent, which took place in 1545, surely? anyway, a rather long time after the Apostles.
Holy Mass is pretty much the same today as it always was, and the core elements are in fact identical to what the Apostles themselves would do on the Lord’s Day (Dies Domini, Domenica, in English “Sunday”).
There is no scriptural evidence to be found, that supports the claim that the apostles of Jesus Christ knew anything about sanctifying Sunday and observing it as a holy day of worship. Sunday became the ‘Sabbath’ in 321 AD by the order of Constantine…
Catholicism preserves within itself the fullness and plenitude of the Christian teaching, especially with regards to the most excellent of all sacraments, the source and summit of the life of the Church: the celebration of the Eucharist.
And by the way, this idea of “teachings of Bible” vs. “teachings from men” is in odor of protestantism. The Canon of the Bible was organized by men (by Catholic men) under the guidance of the Holy Spirit, and Sacred Tradition is also based on the teachings of men (of Catholic men) under the guidance of the Holy Spirit. It is the worst form of arrogance and pride to reject 20 centuries of solid, scriptural, consistent Catholicism in favor of the novelties of some random modern-day would-be Bible interpreter. Master the teachings of the Church first, then you will be able to refute each and every other “Christian” doctrine very quickly.