Well....now I understand why you are curious about denominations. Makes sense. My apologies.......
But....it still doesn’t justify observing man made “Religious observances” in lieu of the real thing. You can look from Genesis to Revelation and not find much of what modern day “Churchianity” observes....and believes.
The Holy Spirit chose Greek to protect the scriptures as it is a precise language....difficult to mistranslate.
But.....C’est la Vie!