Faith versus the Law is not complicated.
One can obey "thou shalt not kill" and yet remain hateful within. Thus obeying a listed law does not make one righteousness. It is for this reason that Paul teaches that righteousness is not by the law.
My friend, you are missing the point of writing the Law in our hearts...
Mat 5:21 Ye have heard that it was said by them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment:
Mat 5:22 But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire.
Mat 5:23 Therefore if thou bring thy gift to the altar, and there rememberest that thy brother hath ought against thee;
Mat 5:24 Leave there thy gift before the altar, and go thy way; first be reconciled to thy brother, and then come and offer thy gift.
Mat 5:25 Agree with thine adversary quickly, whiles thou art in the way with him; lest at any time the adversary deliver thee to the judge, and the judge deliver thee to the officer, and thou be cast into prison.
Mat 5:26 Verily I say unto thee, Thou shalt by no means come out thence, till thou hast paid the uttermost farthing.
Hating someone, even disdaining someone, counting them inferior to you is tantamount to breaking the sixth Commandment.
Faith on the other hand WORKS BY LOVE and it is love that fulfills the righteousness of the law. If one truly loves they do not need a listed law stating "thou shalt not kill" for "love works no ill."
I see this used a lot but it disagrees with what Paul says...
Rom 7:7 What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet.
Paul says that he would not know sin except it were defined by the Law.
This is why Jesus said love is the greatest commandment and that all the law and the prophets is established on love.
So many people err in thinking that "grace" means "unconditional pardon" and thus view that one can be declared righteous by God apart from a "faith that works by love." There is no justification in God's sight apart from a "faith that works by love" for it is via abiding in the Spirit of life in Jesus Christ (walking according to the Spirit having crucified the old man) that we can indeed have the love of God perfected in us whereby we take hold and manifest a genuine faith that works by love.
It is for this reason that love does not rejoice in iniquity but rather deplores all unrighteousness. Those who are truly Christ's will manifest the fruit of the Spirit in their lives and thus be known by their fruit.
We are to have our eyes singly fixates on Jesus Christ and abide in His light whereby we are made alive in Him. It is through this connection with our Creator that our hearts are made clean and thus we being created in Jesus Christ are useful for the Father's work.
I implore people to not be deceived by this debate of "law versus grace" which is presented within a paradigm of "unmerited favour" versus "saving oneself."
The law is only done away within the context of love fulfilling the righteousness of the law, whereby the change is from external governance (law) to internal governance (pure heart). Thus we are dead to the law by the body of Christ in that we serve Him in spirit and in truth.
The Law saves no one. It defines right and wrong. A long time ago, our parents had to make a choice, would they accept that only God can determine right and wrong or would they try to determine it for themselves. To rob a phrase from The Last Crusade, they chose poorly...
Gen 3:5 For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.
Gen 3:6 And when the woman saw that the tree was good for food, and that it was pleasant to the eyes, and a tree to be desired to make one wise, she took of the fruit thereof, and did eat, and gave also unto her husband with her; and he did eat.
Gen 3:7 And the eyes of them both were opened, and they knew that they were naked; and they sewed fig leaves together, and made themselves aprons.
Gen 3:22 And the LORD God said, Behold, the man is become as one of us, to know good and evil: and now, lest he put forth his hand, and take also of the tree of life, and eat, and live for ever:
So the Law defines sin for us. God sets before us a choice...
Deu 30:19 I call heaven and earth to record this day against you, that I have set before you life and death, blessing and cursing: therefore choose life, that both thou and thy seed may live:
Deu 30:20 That thou mayest love the LORD thy God, and that thou mayest obey his voice, and that thou mayest cleave unto him: for he is thy life, and the length of thy days: that thou mayest dwell in the land which the LORD sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give them.
The Law directs our steps in the good and right way to live...
Psa 19:7 The law of the LORD is perfect, converting the soul: the testimony of the LORD is sure, making wise the simple.
Psa 19:8 The statutes of the LORD are right, rejoicing the heart: the commandment of the LORD is pure, enlightening the eyes.
Psa 19:9 The fear of the LORD is clean, enduring for ever: the judgments of the LORD are true and righteous altogether.
Psa 19:10 More to be desired are they than gold, yea, than much fine gold: sweeter also than honey and the honeycomb.
Psa 19:11 Moreover by them is thy servant warned: and in keeping of them there is great reward.
Psa 19:12 Who can understand his errors? cleanse thou me from secret faults.
Psa 19:13 Keep back thy servant also from presumptuous sins; let them not have dominion over me: then shall I be upright, and I shall be innocent from the great transgression.
Psa 19:14 Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O LORD, my strength, and my redeemer.
Psa 119:172 My tongue shall speak of thy word: for all thy commandments are righteousness.
Psa 119:98 Thou through thy commandments hast made me wiser than mine enemies: for they are ever with me.
Psa 119:99 I have more understanding than all my teachers: for thy testimonies are my meditation.
Psa 119:100 I understand more than the ancients, because I keep thy precepts.
Psa 119:101 I have refrained my feet from every evil way, that I might keep thy word.
Psa 119:102 I have not departed from thy judgments: for thou hast taught me.
Psa 119:103 How sweet are thy words unto my taste! yea, sweeter than honey to my mouth!
Psa 119:104 Through thy precepts I get understanding: therefore I hate every false way.
Psa 119:105 NUN.
Thy word is a lamp unto my feet, and a light unto my path.
Psa 119:106 I have sworn, and I will perform it, that I will keep thy righteous judgments.
Now what happens when we stray from this path? It is called sin...
1Jn 3:4 Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
This is where grace comes in, Christ forgives our sin through grace. Grace is the unearned, unmerited pardon for sins committed. David understood this...
Psa 130:3 If thou, LORD, shouldest mark iniquities, O Lord, who shall stand?
Psa 130:4 But there is forgiveness with thee, that thou mayest be feared.
Psa 51:1 To the chief Musician, A Psalm of David, when Nathan the prophet came unto him, after he had gone in to Bathsheba. Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions.
Psa 51:2 Wash me throughly from mine iniquity, and cleanse me from my sin.
Psa 51:3 For I acknowledge my transgressions: and my sin is ever before me.
Psa 51:4 Against thee, thee only, have I sinned, and done this evil in thy sight: that thou mightest be justified when thou speakest, and be clear when thou judgest.
Psa 51:5 Behold, I was shapen in iniquity; and in sin did my mother conceive me.
Psa 51:6 Behold, thou desirest truth in the inward parts: and in the hidden part thou shalt make me to know wisdom.
Psa 51:7 Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.
Psa 51:8 Make me to hear joy and gladness; that the bones which thou hast broken may rejoice.
Psa 51:9 Hide thy face from my sins, and blot out all mine iniquities.
Psa 51:10 Create in me a clean heart, O God; and renew a right spirit within me.
Psa 51:11 Cast me not away from thy presence; and take not thy holy spirit from me.
Psa 51:12 Restore unto me the joy of thy salvation; and uphold me with thy free spirit.
Psa 51:13 Then will I teach transgressors thy ways; and sinners shall be converted unto thee.
Psa 51:14 Deliver me from bloodguiltiness, O God, thou God of my salvation: and my tongue shall sing aloud of thy righteousness.
Psa 51:15 O Lord, open thou my lips; and my mouth shall shew forth thy praise.
Psa 51:16 For thou desirest not sacrifice; else would I give it: thou delightest not in burnt offering.
Psa 51:17 The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise.
Psa 51:18 Do good in thy good pleasure unto Zion: build thou the walls of Jerusalem.
Psa 51:19 Then shalt thou be pleased with the sacrifices of righteousness, with burnt offering and whole burnt offering: then shall they offer bullocks upon thine altar.
Psalm 51 is a very moving prayer that David prayed in repenting of adultery with Bathsheba and the murder of Uriah. David understood forgiveness and the coming sacrifice of Christ...
Heb 10:1 For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.
Heb 10:2 For then would they not have ceased to be offered? because that the worshippers once purged should have had no more conscience of sins.
Heb 10:3 But in those sacrifices there is a remembrance again made of sins every year.
Heb 10:4 For it is not possible that the blood of bulls and of goats should take away sins.
Heb 10:5 Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me:
Heb 10:6 In burnt offerings and sacrifices for sin thou hast had no pleasure.
Heb 10:7 Then said I, Lo, I come (in the volume of the book it is written of me,) to do thy will, O God.
Heb 10:8 Above when he said, Sacrifice and offering and burnt offerings and offering for sin thou wouldest not, neither hadst pleasure therein; which are offered by the law;
Heb 10:9 Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.
Heb 10:10 By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
Heb 10:11 And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:
Heb 10:12 But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God;