Did Jesus’ death only atone for past sins or all sin, past-present-future? What law is relevant in the New Covenant defining sin and Elohim’s expectations concerning obedience?

Discussion,

Jesus died for all sin, past-present-future (Hebrews 8-10; 1 John 2:2); otherwise, Jesus would be subject to repeated crucifixion as the bygone Law Covenant required repetitive blood sacrifices for the sins of Israel’s children; this, because the blood of bulls and goats could never take away sin (Hebrews 10:1-4).

Concerning Sinai and Moses, their purposes and the temporary, inferior, nature of codification…

The Ten-Commandments are but a mere fraction of Elohim’s comprehensive spiritual law; therefore, Sinai and Moses are wholly inadequate sources concerning righteousness with the Father. Sinai and Moses were given specifically to Israel’s children for sanctification and eschatological purposes in order to thwart Israel’s compromise with paganism; specifically, compromise with Baal and Molech; this, as Elohim did not desire a repeat of the demonically based failures of the Adamic and Noahic generations, two-generations who were governed solely by the spiritual law written upon the human heart (Romans 2:14-15) void the Holy Spirit as a relevant arbiter, a spiritual law that was negated, made impotent, by a seared conscience of a people group sold into demonic slavery and defilement via spiritual compromise (Romans 1:18-32).

Sinai was not given the Gentile lest same sought inclusion into Israel’s theocracy. Sinai was fragmented, codified, temporal, instructions to a people group through whom Elohim would endeavor to introduce His Messiah and His Gospel into the World to fulfill His promise to Abraham relevant to “a blessing to every family of the Earth” (Genesis 12:3b). Sinai’s intent was sanctification (a setting apart) of Israel’s children for Elohim’s eschatological purposes (“you shall be holy as I AM holy”) and Sinai was temporary, inadequate, as a purveyor of true righteousness as neither Sinai or Moses as codified laws could adequately address the totality of moral deterrence concerning human and angelic behavior required for true holiness and righteousness; hence, the eternal superiority of the Spiritual Law arbitrated by the indwelling Holy Spirit via a New Covenant.

Therefore,

The New Covenant is NOT regulated by Sinai or Moses or Days or Diets or Traditions or codified laws, but the man or woman who trusts in Messiah Jesus as LORD is redeemed by an imputed-gifted righteousness not their own (2 Corinthians 5:21; Genesis 3:21); that is, a divinely gifted righteousness earned for us by Messiah Jesus and fulfilled at Golgotha via blood atonement (Matthew 26:28; 1 Peter 1:18-19); therefore, the Christian is not enslaved to letters, laws, diets, days, traditions of a bygone Covenant of Law (Romans 6:14; 7:6; Hebrews 8:7), but the Christian serves through the tutelage of the indwelling Holy Spirit (Ephesians 1:13-14; John 14:16; Galatians 5:16) and the enlivened Spiritual Law written upon the heart (Hebrews 10:16), a Spiritual Law which is arbitrated by a redeemed conscience (2 Corinthians 5:17) producing fruits of righteousness (Galatians 5:22-23) against which there is no law as these divine fruits fulfill all law, both codified and spiritual (Galatians 5:16-23).