When did Elohim actually provide humanity with His perfect, Holy and Righteous Law, at creation or Sinai?
The Eternal Law,
That Holy and Righteous Law was infused within humanity on the 6th-Day and has been relevant from the creation of the angels as an arbiter of free will and will continue to be relevant in the Kingdom where free will remains extant by necessity. Elohim infused the moral law of conscience (Romans 2:14-15) into the human genome on Day-6 as humanity is created in Elohim’s spiritual image having received certain communicable attributes of Elohim specifically for His eschatological purposes in Time and Eternity (Genesis 1:26-28).
That same moral law of conscience was used to judge Satan of covetousness which resulted in his extrication from the Kingdom (Luke 10:18; John 8:44; Ezekiel 28:11+); that same moral law of conscience was used to judge the Adamic and Noahic generations of defilement worthy of death by water where all perished save eight (Romans 1:18-32). That same law acts as a bulwark against societal self-destruction/implosion in unrestrained narcissism. That same moral law of conscience provided a foundation for the Code of Hammurabi and the Sinai Commandments. That same moral-natural law under girded the Commandments of Jesus during His ministry. That same law will be used by Jesus for adjudication at the Judgment of the Condemned manifesting subsequent His Millennial Reign (Revelation 20:11-15) and that same law will be relevant in the Eternal Kingdom where free will remains extant by necessity concerning love and relationship with our Creator.
The Law Covenant,
The law given Israel at Sinai is nothing new or novel but is based upon the moral law of conscience with some specificity for the Hebrew Tribes as they were sanctified (set apart) for Yahweh’s eschatological purposes while inundated and surrounded by pagan tribes serving pagan gods; therefore, Yahweh provided laws that addressed His concerns for the Hebrew Tribes as His messengers and object lesson to the World and the Heavenly angels but the Sinai Commandments are not the genesis of God’s law as they are simply the product of the moral law of conscience with specificity provided Israel’s children for a specific eschatological purpose; namely, the introduction of Messiah into the World “to destroy the works of the Devil” (1 John 3:8b) i.e. the entirety of purpose concerning the creation of Time, the Heavens and the Earth and our complex genome.
Superiority of Eternal Law,
The Law Covenant was relevant to only a minuscule fragment of societal totality concerning the Realm of Time but the moral law of conscience has been relevant from the creation of the angels and will be relevant into Eternity; therefore, the perfect and Holy and Righteous Law of God concerning humanity does not find its genesis at Sinai but in Eternity and concerning humanity, specifically on Day-6 of the Creation Narrative.
I’m not under the Law Covenant, never was, never will be (Romans 6:14). I am not Jacob’s child but a child of Abraham, a Gentile, by faith and I am under grace by faith in my Messiah and I walk by the Law of the Spirit written upon my heart (the moral law of conscience) arbitrated by the Spirit via the conscience of the “new man” via sanctification (2 Corinthians 5:17; Galatians 5:16), not letters etched in stone or scratched upon parchment that only condemn and kill void atonement (Romans 3:20; Galatians 3:10; 2 Corinthians 3:6).
It is written,
4 Such is the confidence that we have through Christ toward God. 5 Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God, 6 who has made us sufficient to be ministers of a new covenant, not of the letter but of the Spirit. For the letter kills, but the Spirit gives life.
7 Now if the ministry of death, carved in letters on stone, came with such glory that the Israelites could not gaze at Moses’ face because of its glory, which was being brought to an end, 8 will not the ministry of the Spirit have even more glory? 9 For if there was glory in the ministry of condemnation, the ministry of righteousness must far exceed it in glory. 10 Indeed, in this case, what once had glory has come to have no glory at all, because of the glory that surpasses it. 11 For if what was being brought to an end came with glory, much more will what is permanent have glory. 2 Corinthians 3:4-11 (ESV)