Yes. The Church of the Great God believes that the fourth commandment (Exodus 20:8-11) is still very much in effect. We keep the weekly Sabbath from sunset Friday to sunset Saturday, conducting a traditional church of God service on Saturday. We also observe the Passover and the seven annual holy days as outlined in Leviticus 23. Since Jesus, His apostles and the first-century church kept these days, we believe that God requires us to keep them as well.
For more information on God's Sabbath and the holy days, please see our website, Sabbath.org.