Seventh Day Baptists/Adventists/Messianics: Protestants or COG?

Although Seventh Day Baptists (SDBs), Seventh-day Adventist (SDAs), and Messianic Jews keep some version of the seventh day Sabbath, are they Protestant or Church of God. What do they claim? What do they teach? What do SDAs and Messianic Jews teach about their history? Do SDBs cite groups who held Church of God (COG) and not SDB doctrines? Which group teaches the original biblical Christian faith? How do the SDAs, Messianics, and SDBs agree with Protestants on issues such as salvation, history, and the Godhead, which differ greatly from the Continuing Church of God (CCOG)? Are there really 613 laws of the Torah? Are the 613 mist What are 28 ways the SDBs differ from the CCOG? Are 'Black Israelites' right about Jesus being a black African? Was the Day of Atonement on October 22, 1844 according to Rabbinical or Karaite Jews? Did the SDAs or COG come out of the Millerite movement? Did Ellen White make false prophecies that she insisted came from God? If so, what were some of them? Did the SDA church send out literature it knew was clearly wrong? Was Ellen G. White's sanctuary interpretation the "complete system of truth"? Did SDAs once teach crosses were pagan, but now include them in their official logo? Which of the 4 churches (SDB,SDA, Messianic, CCOG) doctrines have the most biblical and historical support? Dr. Thiel addresses these issues and more.

A free online book of related interest is available titled "Hope of Salvation: How the Continuing Church of God differs from Protestantism" URL: https://www.cogwriter.com/protestant-ccog-differences.pdf