So are there physical ways we observe Sabbath?
Or is that too just about reading and understanding the spiritual significance in Christ?
Quite a loaded question. It gets into what is the way humans should react to the spiritual commandments? Can we do it in our head with no physical follow up, can we do it with a physical follow up and let that be sufficient? What connection is there in what we do and our spirit and is there a connection. We have thoroughly explored the place of rituals like diet and their connection to the spiritual teaching. We decided that choosing certain foods is not required to fulfill the spirit. Now, you are asking if we can honor the Sabbath in the same way, only with the spirit.
I don't think we can in the same way. We can't give legalistic rules, give the letter of the law, and say that is honoring the Sabbath. At the same time, if man makes no difference in how he physically acts on that day to separate it out as a holy day, then he isn't honoring it spiritually, either. It would be like saying I'm going to play catch with my kids spiritually as you refuse to even speak to the kids.