After a series of violent conflicts between Rome and the Jews in the late first and early second centuries, the gentile converts to the Jewish sect alternately known as the Way, the Nazarenes, and the Christians, pushed hard to distance themselves from the hated upstarts. Since most of the Empire couldn't tell the difference, it took a long while to make the break final. To put everyone's minds at ease, the gentile Christians decided to change all of their holidays so they could celebrate on the same days as the polytheistic Romans. Then they switched to a Sunday "sabbath" because only those dirty Jews kept God's seventh day Sabbath.
Eventually, the Christians began to look so much like the Jovians that they kind of forgot what the big fuss was about. Peter took over the robes, halo, and statue of of Jupiter. Mary ousted Juno. And Joseph, poor Joseph... Well, Joseph faded into the shadows as an eternally cuckolded almost-husband of Juno...I mean Hera...I mean Mary.
Roman Catholicism is little more than a Latinized Jewish makeover of Roman paganism. Sure, it has lots of ancient traditions and cool hats, but it's missing a lot of Bible. Even more importantly, it's missing the one and only very Jewish Messiah.
It's time to finish the job that the original Protestant reformers began.
Keep the Sabbath, God's Sabbath. Keep the feast days, God's feast days, not the replacements foisted on the illiterate, superstitious masses by the Abomination of Desolation in Rome. Keep the commandments and reject the weak and worthless elementary principles of Rome, because as wise Solomon once wrote, to fear God and to keep His commandments is the whole duty of man.