The Seventh-day Adventists, a numerically small sect of Christians, hold to the cardinal principle of setting apart Saturday for the exclusive worship of God, in conformity with the positive command of God Himself, repeatedly reiterated in the sacred books of the Old and New Testaments. This practice, literally obeyed by the children of Israel for thousands of years and endorsed by the teaching and practice of the Son of God whilst on earth, is derived from the Old Testament and confirmed by the New Testament through the life and practice of the Redeemer and His apostles for nearly a century of the Christian era. Both Israelites and Adventists appeal to the Bible for the divine command, persistently obliging the strict observance of Saturday as the day for worship. The Adventists find that the Bible, their teacher, is consistent in both parts, showing that the Redeemer, during His mortal life, never kept any other day than Saturday, with no vestige of an act canceling this arrangement found in the Gospels, the Acts of the Apostles, the Epistles, or the Apocalypse.

The biblical Sabbath, identified as Saturday, is presented as the day God Himself rested from creation and commanded to be kept holy, as seen in Genesis 2:2 and Exodus 20. This command is reinforced throughout the Old Testament with one hundred and twenty-six references, emphasizing its sanctity as a perpetual covenant, with severe penalties for violation as stated in Exodus 31:14. The historical practice of the Israelites, spanning over 3383 years from A.M. 2514 to A.D. 1893, confirms Saturday as the seventh day to be observed, establishing an unbroken tradition of worship on that day. In the New Testament, the Sabbath, referred to as Saturday, is mentioned sixty-one times, with the Saviour consistently teaching and performing miracles on that day, affirming it as holy. The apostles and personal friends of the Saviour continued to observe Saturday as the Sabbath even after His death, as evidenced in Luke 23:56, showing no indication of a change in the day of worship. Throughout the Acts of the Apostles, covering a period of thirty years, Saturday remains the day of observance with no hint of alteration by divine authority or apostolic practice. Thus, those who adhere strictly to biblical guidance, such as the Israelites and Seventh-day Adventists, are shown to uphold Saturday as the designated day of worship.