Because Seventh-day Adventists believe in keeping the commandments of God, they also keep the seventh-day Sabbath commandment since it’s one of the commandments (Exodus 20:8-11).
This day which was first instituted in Eden before the entrance of sin serves as a weekly reminder that God is our Creator. And just as He rested from His works on the seventh day, we are called to do the same (Luke 13:15).
As with the other nine commandments, Adventists don’t keep the sabbath to be saved, but as an expression of that salvation. The Sabbath commandment is one that can bring joy and freedom as we remember that we were created by a loving God.
I am the Lord your God; follow my decrees and be careful to keep my laws. Keep my Sabbaths holy, that they may be a sign between us. Then you will know that I am the Lord your God(Ezekiel 20:19-20).
Seventh-day Adventists’s Biptism.
Baptism is an important event in the believer’s walk with Jesus Christ. The Bible talks about water immersion baptism in which a believer makes a public confession of their faith. When a believer decide to follow Jesus as savior. Jesus led the way in the example of water baptism! In (Acts 2:38) said “Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit. 22:16 “And now what are you waiting for? Get up, be baptized and wash your sins away, calling on his name.”
Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age(Matthew 28:19-20).