They did. They the Apostles. The infallible teachings on faith and morals come directly from the Apostles. The Apostles said exactly what the Church teaches. They didn't write down everything they taught that was "not I, but the Lord" (1Co7:10KJV ; comp. 1Co7:12KJV "I, not the Lord") over the decades that the Apostles herded the first Church, the Catholic Church, but they spoke and taught and explained and discussed and reasoned with the ordained bishops, and after all the Apostles died, then the bishops had what they all remembered the Apostles had said, plus all that the Apostles wrote, and all that was written of them, and declared Christian Sacred Scripture by St. Peter, as he had done for Paul's epistles, including the one he wrote to the Church in Rome.But who determined that making the Sabbath holy must include Mass
In Acts 2:42 (KJV) and Acts 2:46 (KJV), the Church seems to celebrate the Eucharist every day.
Why does the magisterium teach this? Either the magisterium has freedom to teach differently from what the Apostles said, or they do not. So this is either Apostolic, or it is not. But we do know that the Eucharist started very early in Church history.and that an intentional and unreported missing of it meant hell?Men, not God. Magisterial teaching, I know. But that's another path to follow, isn't it?