God wrote the Sabbath day commandment himself on a tablet of stone

Note: There are several interesting facts which come out of these scriptures, concerning the ten commandments:

   (1) God wrote them himself
Nowhere else in the whole bible is it recorded that God wrote commandments with his own finger, as he did here (Exodus 31:18; Deuteronomy 9:10). The fact that God wrote them himself insured his total authority behind them, no mistakes were made when they were written, and they were engraved in stone for permanence. Notice that, "the tablets were the work of God," (Exodus 32:16), and as "his work isperfect:" (Deuteronomy 32:4), every commandment, including the Sabbath commandment, must be perfect. These commandments, which were the basis of the Old Covenant, were called "the tablets of the covenant." (Deuteronomy 9:9; 9:11; 9:15), and were placed in the ark called "the ark of the covenant" (Numbers 10:33; 14:44; Deuteronomy 10:8; 31:9). These are the same commandments and laws that are to be written on our heart when we become a partaker of the New Covenant (See #1.5), and which will be fulfilled by love (See #1.25).

   (2) God spoke them to the whole congregation
God did occasionally speak to individuals on a lengthy basis (Job 38-41), but a discourse such as this, full of commandments, and spoken to so many people (Deuteronomy 5:22; 9:10), is totally unique. Approximately six hundred thousand men left Egypt (Exodus 12:37), plus women, plus children, plus others, so "all your assembly" (Deuteronomy 5:22) may have numbered around two million people. The fact that God chose to speak these commandments audibly himself, and not leave it to others to speak only, shows how much importance he placed on them, and emphasises their permanence:

(Psalm 89:34) "My covenant I will not break, nor alter the thing that is gone out of my lips."

So we can be sure that God is not Going to alter the ten commandments. This can be confirmed by the fact that the ten commandments, which were written on stone, were also called "the testimony" (Exodus 25:16; 30:6; 40:20), and "tablets of testimony" (Exodus 31:18; 32:15; 34:29). They were placed in the ark, which was called "the ark of the testimony" (Exodus 25:22; 31:7; 40:3; Joshua 4:16), which was kept in a tent called "the tabernacle of testimony" (Exodus 38:21; Numbers 1:50; 1:53). Thus the word "testimony" in the Old Testament often refers to the ten commandments, and when we read:

(Isaiah 8:20) "To the law and to the testimony: if they do not speak according to this word, it is because there is no light in them."

we can know that there is no light in those who do not speak according to the ten commandments.