The observance of the Sabbath is the sign between God and His people. Let us not be ashamed to bear the sign that distinguishes us from the world. As I considered this matter in the night season recently, One of authority counseled us to study the instruction given the Israelites in regard to the Sabbath. “Verily My Sabbaths ye shall keep,” the Lord declared to them; “for it is a sign between Me and you throughout your generations; that ye may know that I am the Lord that doth sanctify you. Ye shall keep the Sabbath therefore; for it is holy unto you.... Six days may work be done; but in the seventh is the Sabbath of rest, holy to the Lord: whosoever doeth any work in the Sabbath day, he shall surely be put to death. Wherefore the children of Israel shall keep the Sabbath, to observe the Sabbath throughout their generations, for a perpetual covenant. It is a sign between Me and the children of Israel forever.” Exodus 31:13-17. CH 235.1
The Sabbath is ever the sign that distinguishes the obedient from the disobedient. With masterly power Satan has worked to make null and void the fourth commandment, that the sign of God may be lost sight of. The Christian world have trodden underfoot the Sabbath of the Lord and observe a sabbath instituted by the enemy. But God has a people who are loyal to Him. His work is to be carried forward in right lines. The people who bear His sign are to establish churches and institutions as memorials to Him. These memorials, however humble in appearance, will constantly bear witness against the false sabbath instituted by Satan, and in favor of the Sabbath instituted by the Lord in Eden, when the morning stars sang together and all the sons of God shouted for joy. CH 235.2
A spirit of irreverence and carelessness in the observance of the Sabbath is liable to come into our sanitariums. Upon the men of responsibility in the medical missionary work rests the duty of giving instruction to physicians, nurses, and helpers in regard to the sanctity of God's holy day. Especially should every physician endeavor to set a right example. The nature of his duties naturally leads him to feel justified in doing on the Sabbath many things that he should refrain from doing. So far as possible, he should so plan his work that he can lay aside his ordinary duties. CH 236.1