Examples of God's law before Mosaic Law existed; before Moses existed:

Murder: Gen. 9:5,6
Adultery: Gen. 20:3
Idolatry: Gen. 35:2-4
Theft: Gen. 21:25

Nowhere in Scripture is the Law of Moses divided into "moral", "civil" and "ceremonial":

John Gill takes the words "my commandments, my statutes, and my laws" in Gen. 26:5 and seems to describe them as: "whether moral, ceremonial, or civil and judicial" but when following these Hebrew words through the OT, that will not hold up.

The Law of Moses had a specific starting "day", a Law given to no other nation:

"And what other great nation has statutes and ordinances as just as this entire law that I am setting before you today?" (Deut 4:8, NRSV)

"When Gentiles, who do not possess the law, do instinctively what the law requires, these, though not having the law, are a law to themselves. They show that what the law requires is written on their hearts, to which their own conscience also bears witness; and their conflicting thoughts will accuse or perhaps excuse them" (Rom 2:14-15, NRSV)
* I take it the law written on the heart came from the creation and is seen in Genesis.
** Only Israel was given the Old Covenant, with the Ten Commandments, and that was abolished at the cross.

Moses saw in the distant future when another prophet would succeed him:

"The LORD your God will raise up for you a prophet like me from among your own people; you shall heed such a prophet. This is what you requested of the LORD your God at Horeb on the day of the assembly when you said: “If I hear the voice of the LORD my God any more, or ever again see this great fire, I will die.” Then the LORD replied to me: “They are right in what they have said. I will raise up for them a prophet like you from among their own people; I will put my words in the mouth of the prophet, who shall speak to them everything that I command. Anyone who does not heed the words that the prophet shall speak in my name, I myself will hold accountable." (Deut 18:15-19, NRSV)

Jesus Christ is the prophet of which Moses spoke:

"Moses said, ‘The Lord your God will raise up for you from your own people a prophet like me. You must listen to whatever he tells you. And it will be that everyone who does not listen to that prophet will be utterly rooted out of the people.’" (Acts 3:22-23, NRSV)

"Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything that I have commanded you. And remember, I am with you always, to the end of the age.” (Matt 28:19-20, NRSV)

"To those outside the law I became as one outside the law (though I am not free from God’s law but am under Christ’s law) so that I might win those outside the law." (1Cor 9:21, NRSV)

When did the switch from Mosaic Law to Christ's Law take place?

“Do not think that I have come to abolish the law or the prophets; I have come not to abolish but to fulfill. For truly I tell you, until heaven and earth pass away, not one letter, not one stroke of a letter, will pass from the law until all is accomplished. (Matt 5:17-18, NRSV)

"fulfill" = REB "to complete"; Weymouth "give them their completion"

When was this all accomplished?

"When Jesus had received the wine, he said, “It is finished.” Then he bowed his head and gave up his spirit." (John 19:30, NRSV)

The entire Law of Moses has been abolished or annulled at the cross.

"He has abolished the law with its commandments and ordinances, that he might create in himself one new humanity in place of the two, thus making peace, and might reconcile both groups to God in one body through the cross, thus putting to death that hostility through it." (Eph 2:15-16, NRSV)

"And when you were dead in trespasses and the uncircumcision of your flesh, God made you alive together with him, when he forgave us all our trespasses, erasing the record that stood against us with its legal demands. He set this aside, nailing it to the cross." (Col 2:13-14, NRSV)

"In speaking of “a new covenant,” he has made the first one obsolete. And what is obsolete and growing old will soon disappear." (Heb 8:13, NRSV)
*we know the first Covenant included the 10 Commandments (words)
"He was there with the LORD forty days and forty nights; he neither ate bread nor drank water. And he wrote on the tablets the words of the covenant, the ten commandments." (Exod 34:28, NRSV)

"Now if the ministry of death, chiseled in letters on stone tablets, came in glory so that the people of Israel could not gaze at Moses’ face because of the glory of his face, a glory now set aside, how much more will the ministry of the Spirit come in glory? For if there was glory in the ministry of condemnation, much more does the ministry of justification abound in glory! Indeed, what once had glory has lost its glory because of the greater glory; for if what was set aside came through glory, much more has the permanent come in glory!" (2Cor 3:7-11, NRSV)

The preceding Scriptures force me to embrace New Covenant Theology and also the First London Confession of Faith of 1646 which does not teach the "Ten Commandments" or any of the Mosaic Law, but only Christ's law in the New Covenant. This confession states in part, in its conclusion, the following statement:

"If any man shall impose upon us anything that we see not to be commanded by our Lord Jesus Christ, we should in His strength rather embrace all reproaches and tortures of men, to be stripped of all outward comforts, and if it were possible, to die a thousand deaths, rather than to do anything against the least tittle of the truth of God or against the light of our own consciences."