We aren't under the law. We are saved by grace through faith Ephesians 2:8
Yes, we are saved by grace through faith. Does someone with faith hear God's voice and obey Him or rebel?
Luke 6:46 “But why do you call Me ‘Lord, Lord,’ and not do the things which I say?
Sin is breaking God's law
1Jn 3:4 Whoever commits sin also commits lawlessness,
and sin is lawlessness.
Jas 2:11
For He who said, "DO NOT COMMIT ADULTERY," also said, "DO NOT MURDER." Now if you do not commit adultery, but you do murder,
you have become a transgressor of the law.
You can find the rest of what God said in the Ten Commandments Exo 20:1-17
So while we are saved by grace through faith does grace void the Law?
Rom 6:1 What shall we say then? Shall we continue in sin(breaking God's law) that grace may abound?
Rom 6:2
Certainly not! How shall we who died to sin live any longer in it?
While we are not saved by keeping any Law, we are only saved by grace through faith obedience to God and His commandments demonstrates our salvation and faith in Christ.
Joh 15:4 Abide in Me, and I in you. As the branch cannot bear fruit of itself, unless it abides in the vine, neither can you, unless you abide in Me.
Joh 15:5 "I am the vine, you are the branches. He who abides in Me, and I in him, bears much fruit; for without Me you can do nothing.
Joh 15:6 If anyone does not abide in Me, he is cast out as a branch and is withered; and they gather them and throw them into the fire, and they are burned.
Joh 15:7 If you abide in Me, and My words abide in you, you will ask what you desire, and it shall be done for you.
Joh 15:8 By this My Father is glorified, that you bear much fruit; so you will be My disciples.
Joh 15:9 "As the Father loved Me, I also have loved you; abide in My love.
Joh 15:10
If you keep My commandments, you will abide in My love, just as I have kept My Father's commandments and abide in His love.
Rev 14:12 Here is the patience of the saints; here are those who keep the commandments of God and the faith of Jesus.
Eph 2:10 For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand that we should walk in them.
In Scripture unbelief is the same as rebellion, sin and disobedience.
While we are not saved by the Law, we keep God's Law because we love Him John 14:15 1 John 5:3 and no one is going to be saved in their sins (rebelling against God's Law) Heb 10:26-30 Rom 6:16 Rom 8:7-18 Rev 22:15 Mat 7:23 etc.