Which would put you in a bit of a problem, since two 1st century Jewish writers (Philo and Josephus) divide the Ten Words according to what is called the Philonic division - the same reckoning used by the Greek Church and by most Protestants today.
Now the most excellent five were of this character, they related to the monarchial principle on which the world is governed; to images and statues, and in short to all erections of any kind made by hand; to the duty of not taking the name of God in vain; to that of keeping the holy seventh day in a manner worthy of its holiness; to paying honour to parents both separately to each, and commonly to both. So that of the one table the beginning is the God and Father and Creator of the universe; and the end are one’s parents, who imitate his nature, and so generate the particular individuals. And the other table of five contains all the prohibitions against adulteries, and murder, and theft, and false witness, and covetousness.
Having said this, he led the people forward, together with the women and children, so that they might hear God converse with them concerning what they must do, in order that the excellence of spoken words might not be harmed by a human tongue in being transmitted to their knowledge. All heard a voice coming from on high to all, so that none of the ten sayings escaped them that Moyses left inscribed on the two tablets. It is not permitted for us to speak them openly verbatim, but we shall reveal their contents.
The first saying teaches us that God is one and that it is necessary to worship him alone. The second bids us to make an image of no living being or to worship it, the third to swear by God on nothing insignificant, the fourth to observe the seventh days by ceasing from all work, the fifth to honor parents, the sixth to desist from murder (φόνου), the seventh not to commit adultery, the eighth not to engage in theft, the ninth not to bear false witness, and the tenth to desire (ἐπιθυμίαν) nothing belonging to another.
- Josephus, Antiquities of the Jews, 3.89-92 (3.5.5)
Modern-day Jews use what is called the Talmudic division, which is implied in the Babylonian Talmud (Makkot 24a) and other rabbinic literature.
R. Simlai when preaching said: Six hundred and thirteen precepts were communicated to Moses, three hundred and sixty-five negative precepts, corresponding to the number of solar days [in the year], and two hundred and forty-eight positive precepts, corresponding to the number of the members of man’s body. Said R. Hamnuna: What is the [authentic] text for this? It is, Moses commanded us torah, an inheritance of the congregation of Jacob, ‘torah’ being in letter-value, equal to six hundred and eleven, ‘I am’ and ‘Thou shalt have no [other Gods]’ [not being reckoned, because] we heard from the mouth of the Might [Divine].
The first word, as it came forth from the mouth of the Holy One, whose Name be blessed, was like storms, and lightnings, and flames of fire, with a burning light on His right hand and on His left. It winged its way through the air of the heavens, and was made manifest unto the camp of Israel, and returned, and was engraved on the tablets of the covenant that were given by the hand of Mosheh, and were turned in them from side to side: and then called He, and said, “Sons of Israel, my people, I am the Lord your God, who brought you out free from the land of Mizraim, from the house of the bondage of slaves.”
The second word which came forth from the mouth of the Holy One, whose Name be blessed, was like storms, and lightnings, and flames of fire. A burning light was on His right hand and on His left and was borne through the air of the heavens, returned, and was made manifest unto the camp of Israel; it returned, and was engraved on the tablets of the covenant, and was turned in them from side to side. Then called He, and said, "House of Israel, my people, you shall have no other God besides me. You shall not make to yourselves image or figure, or any likeness of what is in the heavens above, or on the earth beneath, or in the waters under the earth. You shall not bow down to them, or worship before them; for I the Lord your God am a jealous God and an avenger, punishing with vengeance, recording the guilt of wicked fathers upon rebellious children unto the third and unto the fourth generation of them who hate me; but keeping mercy and goodness for thousands of generations of the righteous who love me, and who keep my commandments and my laws.
“My people of the house of Israel, let no one of you swear by the name of the Word of the Lord your God in vain; for in the day of the great judgment the Lord will not hold guiltless any one who swears by His name in vain…”
- Targum Pseudo-Jonathan on Exodus 20
When Moses would speak and make the Decalogue heard to Israel - for they heard from the mouth of God only “I am…” and “You shall not have” (Makkot 24a) - the Holy One, blessed be He, would assist him [Moses] by giving him strength so that his voice would be strong and audible.
- Rashi, Commentary on Exodus 19:19