Proverbs 4:5 (KJV)
Get wisdom, get understanding: forget it not; neither decline from the words of my mouth.

I suspect, many Christians don’t understand Sabbath. I suspect many people simply accept whatever there church teaches.

2 Timothy 2:15 (KJV)
15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.

It is important that each person knows why he believes what he believes.