One of the Worldwide Church of God offshoots, the United Church of God, keeps the Sabbath and other Hebrew holy days and practices tithing.
They claim to "trace their origins to the Church that Jesus founded" YET they do not celebrate Christmas or Easter either.
Talk about a confused family! I was involved with a woman who became a JW two years after we got together. She and her family were WCoG members, although she wasn't a very good or practicing member as she got older.
After that big split years before, her mother and father stayed in (I guess) the "original" WWCoG. Her sister and her family went into one of the new offshoots that held the customs very (suspiciously?) much like Jews did. They kept the sabbath from Friday dusk to Saturday dusk, etc. (The parents went to one long service on Saturday.)
Then this kooky woman I latched onto (who was very non-moral, if you know what I mean..) decided that, after her previous 10 years or so of immoral behavior, to join the JW! She was going to all their meetings during the week and on Sunday.
What a crazy time these folks had at times when they were together. 1) Basically fundamentalist-type daughter, 1) set of more quiet WWCoG parents and 1) daughter who was a newly-converted JW. It made one's head spin...