Did you ever wonder/question why Seventh-day Adventists worship on Saturday instead of Sunday as many Christians do?
The Bible says:
And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made.
And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made. Genesis 2:2,3.
And God spoke all these words saying . . . Remember the sabbath day, to keep it holy. Exodus 20:1, 8.