We are saved by grace through fidelity/faithfulness.
Clearly no one who relies on the law is justified before God, because “the righteous will live by faithfulness.” Galatians 3:11
What was Paul quoting?
”See, the enemy is puffed up; his desires are not upright– but the righteous person will live by his faithfulness –Habakkuk 2:4
For in the gospel the righteousness of God is revealed–a righteousness that is by faithfulness from first to last, just as it is written: “The righteous will live by faithfulness.” -Romans 1:17
What is the point Paul is making?
”If I tell a righteous person that they will surely live, but then they trust in their righteousness and do evil, none of the righteous things that person has done will be remembered; they will die for the evil they have done.” -Ezekiel 33:13
For you have need of endurance, so that when you have done the will of God you may receive what is promised. For, “Yet a little while, and the coming one will come and will not delay; but my righteous one shall live by faith, and if he shrinks back, my soul has no pleasure in him.” But we are not of those who shrink back and are destroyed, but of those who have faithfulness and preserve their souls. -Hebrews 10:36
Grace does not abolish the Torah. Grace allows us to enter back into covenant with the Father. Faithfulness does not negate obedience to the Father’s instructions, it establishes it.
For if we go on sinning deliberately after receiving the knowledge of the truth, there no longer remains a sacrifice for sins, 27but a fearful expectation of judgment, and a fury of fire that will consume the adversaries. 28Anyone who has set aside the law of Moses dies without mercy on the evidence of two or three witnesses. 29How much worse punishment, do you think, will be deserved by the one who has trampled underfoot the Son of God, and has profaned the blood of the covenant by which he was sanctified, and has outraged the Spirit of grace? 30For we know him who said, “Vengeance is mine; I will repay.” And again, “The Lord will judge his people.” 31It is a fearful thing to fall into the hands of the living God. -Hebrews 10 :26
Willfully continuing in sin (breaking God’s Torah) after coming to a knowledge of what Messiah has done to redeem you back into Covenant is profaning His blood of the Covenant and outraging the Spirit of Grace. We are called to fidelity as we are brought into Covenant with God through His grace demonstrated by the blood of Messiah that inaugurated the renewal of Israel’s (our) marriage covenant with Yahweh.
Sinai was a marriage covenant. Each tablet was an exact copy of the other. It was a Ketubah written on stone; one for each party, namely, Israel and Yahweh. We deFAULTed on the covenant, thus fault was found in the first covenant. This covenant is founded upon better promises…promises that His Torah would be written on our hearts on that day when He restores all things (Jeremiah 31).
Therefore it is not simply “faith” or a “head knowledge” or even “good intentions” that saves us. It is His pouring out of grace upon those who are in a committed, faithful marriage to Him – to those who are in covenant with Him.