Here is a book that readers might review in this regard, called Lying for God. It is about the Seventh Day Adventist church.
http://trishs.net/LYING%20FOR%20GOD%20-%207th%20Edition%20-%20July%2017%202012%20Revision%20-%20PDF.pdf
Personally I don't trust them much as an organization, although I have met some very nice people who are SDA. I received flyers announcing Bible studies by them, where they failed to identify their denominational affiliation. That indicates some level of deceptive behavior on their part. I talked to a Seventh Day Adventist friend about this and he admitted that they do in fact practice this sort of thing because they know they have a reputation as a cult.
In addition, the Church's official position is that those who fail to keep the Saturday Sabbath in the end times are under the mark of the Beast and will lose their salvation.
I also wonder if anyone who presses the Sabbathkeeping issue really understands justification by grace alone through faith alone in Jesus Christ alone.
