The Laws of God define true righteousness:

The Apostle Paul states insightfully that he wouldn’t know definitively what sin is except for the Law’s definition. The Moral Code known as the Ten Commandments have been in existence since Creation. It’s ironic that the one Commandment with the most positive proof of pre-existence – the Seventh Day Sabbath, established at Creation – is the one in particular that traditional religion seeks to disregard and explain away.

[Hebrews 4:4] And God rested on the seventh day from all His works.
Genesis 2:2-3] … He rested on the seventh day … blessed the Sabbath y and hallowed it
[Romans 7:12] … the Law and Commandments are Holy and Righteous and Good!

Traditional religion effectively disregards Law-keeping:

Traditional Christianity, by and large, has diminished the importance of what are known as the Laws of God in Christian Life. Instead, they promote a definition of Grace that effectively renders law-keeping as no longer relevant. In some evangelical circles, a person is soundly FAULTED for any desire or any attempt to keep the Laws of God. In their views, such intent is only for the purpose of attempting to earn salvation by works. While it is true that salvation is a gift which cannot be earned, there are appropriate responses to having received that Gift.

[Colossians 2:14] … the Law wasn’t nailed to the cross, our sin penalty was satisfied there.
[Romans 6:1] … we become obligated to cease from sin once we come under grace.
[Romans 6:15] What, shall we sin that grace may abound? God forbid.
[Romans 7:22] Paul continually sought to comply with the Law’s requirements.
[Romans 6:14] Sin must not continue having dominion over us as it once did.
[Matthew 15:9] Man-made religion substitutes man-created laws in place of God’s Laws
[Philippians 2:12] … we must … “Work out your own salvation with fear and trembling.”

Christ did not ‘do away with’ the Law or Prophets:

We are told to NOT THINK that Christ had any intent to ‘do away with’ the Law. Yet, that is the traditional “New Covenant” teaching, perhaps not stated openly, but effectively, that is the gist. Such a position should be obviously wrong, considering that the terms of the New Covenant involve writing God’s Laws in the hearts and minds, as affirmed in both Old and New Testaments. It is the position of some that the Old Testament Laws were the imposition of the Father. But that the Son came along to rescind those OLD Laws and introduce a new set of commandments of His own in place of the originals. That idea is overturned with the realization that the Being who led Israel out of Egypt and to the foot of Mount Sinai was the same Being who later was manifest as the Son! Why would Christ do away with what He Himself originally gave? Especially the Seventh Day Sabbath, created by His own personal rest after the six days of Creation?

[Matthew 5:17] … think not that I am come to destroy the law or the prophets…
[Hebrews 8:10] The Law will be written in the hearts and minds of New Covenant Christians.
[Jeremiah 31:33] The Law will be written in the hearts and minds of New Covenant Christians.
[1st John 2:4] … anyone who doesn’t keep His commandments doesn’t know God.
[Romans 7:25] Paul inwardly sought God’s help to continually comply with the Laws of God.

He fulfilled the Law as an example we must follow:

A second argument against the Laws of God is the idea that Jesus “fulfilled” the Law, meaning in some peoples’ reasonings that we are then exempt from any requirement to do the same ourselves. In other words, that His fulfillment made it unnecessary for us to similarly comply. In that Christ left us an example that we should follow in His steps, who did no sin, we are left with a different definition of “fulfilled” than is commonly taught. One person’s fulfillment (compliance with) a law does not exempt any follower from a need to do the same themselves. Fulfillment on the part of one does not satisfy another’s obligation to also comply.

[1st Peter 2:21] … Christ … left us an example that we should follow in His steps.
[Revelation 14:4] The first redeemed are those who follow Christ wherever He goes.
[2nd timothy 2:22] . pursue righteousness, faith, love peace with those who call on the Lord.
[Revelation 12:17] … who keep the commandments of God and have the testimony …

Transgression of the Law is Sin and earns Death:

Christians of every persuasion are especially focused upon the subject of sin, and they well should be. We are told that the wages of sin is death, and that all have sinned! That would leave the obvious conclusion that all are deserving of death. It is the full definition of exactly what sin is that can be at issue. There are many definitions, even some that ignore the obvious, that sin is the transgression of the Law! This is clear in the New Testament, and is reinforced in the Old, which states, the soul that sinneth, it shall die!

[Romans 6:23] The wages of sin is death
[Ezekiel 18:20 & 18:4] … the soul that sinneth it shall die.
[Romans 7:7] … the law defines what sin is – it isn’t sin itself.
[1st John 3:4] Sin is the transgression of the Law
[Romans 3:23] All have sinned and fall short of the glory of God

Grace facilitates the remission of sin, it’s not permission to continue in sin:

Dealing with the “sin problem”, we are drawn to the subject of Grace. As the remission (forgiveness or rolling back) of sin is not something that we can in any way ‘earn’ by our own efforts, we are left to throw ourselves upon God’s Mercy. But are there requirements to receiving God’s forgiveness? Forgiveness is basically what Grace is. Undeserved pardon! The more common teaching with regard to Grace is what some refer to as “cheap grace”: a grace which requires no ‘works’ or life-changing performance on the part of worshipers: a grace which is generally ‘licentious’, giving ‘believers’ license to abandon keeping God’s Laws.

[Romans 6:1-2] . God forbids that we continue in sin once we’re forgiven.
[Romans 6:15] … being under Grace does not condone lawbreaking.
[1st John 1:8] … sinlessness is a condition that must be carefully maintained
[Romans 8:7-9] … God’s Spirit is our helper in keeping His Commandments.
[1st john 1:9] Confession is an ongoing necessity to maintaining a cleansed condition.

This is an Excerpt from the book: The Message to God’s Called-Out Ones by the Christian Church of God Grand Junction Colorado. You can read the entire book at the link above.