And he gave unto Moses, when he had made an end of speaking with him upon mount Sinai, two tables of testimony, tables of stone, written with the finger of God.
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Augustine of Hippo
AD 430
This law was “written with the finger of God,” and this finger of God the New Testament explicitly identifies with the Holy Spirit. For when one Evangelist has “By the finger of God, I cast out devils,” another says this same thing thus: “By the spirit of God, I cast out devils.” Who would not have this joy in the divine mysteries, when the redemptive doctrine shines with so clear a light, rather than all the powers of this world though they be infused with unwonted peace and happiness? Letter
Let us look at the Decalogue itself. Undoubtedly Moses received on the mount a law to be ministered to the people, written on tables of stone by the finger of God. It is comprised in ten commandments, among which there is no charge of circumcision or of the animal sacrifices which by Christians are no longer offered. In these ten commandments, apart from the observance of the sabbath, I would ask what the Christian is not bound to observe. Of the commands, not to make or worship idols or any other gods but the one true God, not to take God’s name in vain, to honor parents, to avoid fornication, murder, theft, false witness, adultery, and the coveting of that which is another’s—which among these commands can be said not to bind the Christian? What the apostle calls “the letter that kills” is not this law, written on the two tables, but that of circumcision and the other ancient ordinances now done away. For in the law of the tables comes “You shall not covet,” the command by which (says...
Testimony, to inform men of their duty.
Written, not by Moses, or by any man, but by God himself, or by an angel. (Chap. xxxiv. 1.; Galatians iii. 19.) (Calmet)
