I'd be more impressed, with you and your Biblical reporting, if you presented the whole story, instead of leaving out part of it. . .the part in the next verse, Galatians 3:25:
"Now that faith has come, we are no longer under the supervision of the law."
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oh really? so it's ok to murder, steal, worship idols etc? do you believe that?
law tells us what sin is and sin is transgression of the law.
Does sin still exist? Yes it does ... what is sin? Transgression of the Law.
Scripture tells us that "God is love" 1 John 4:8-16, and His laws, particularly as summarized in the Ten Commandments, show us the
actions that demonstrate love toward others—first toward God (as expressed in the first four of the Ten Commandments), and then toward our fellow man (as expressed in the last six).
Jesus Christ, asked to name the greatest commandment, responded: "‘You shall love the Lord your God with all your heart, with all your soul, and with all your mind.' This is the first and great commandment. And the second is like it: ‘You shall love your neighbor as yourself.' On these two commandments hang all the Law and the Prophets" Matthew 22:37-40.
Jesus here quoted Deuteronomy 6:5 and Leviticus 19:18. These two commands summarize both the Ten Commandments and the entire law of God, as all God's other instructions flow from these two greatest commands.
The 10 are commandments are commandments of love (love towards God & love towards mankind) and through His love, He helps us to overcome sin and we know what sin (transgression of the law) is because His law is written in our hearts.
“He who overcomes shall inherit all things, and I will be his God, and he shall be My son.”
Revelation 21:6-7.
Revelation 3:5
The one who conquers will be clothed thus in white garments, and I will never blot his name out of the book of life. I will confess his name before my Father and before his angels.
What is being overcome? Sin (transgression of the law).
Jesus helps us overcome sin (transgression of the law).
1 John 1:8
If we say we have no sin (transgression of the law), we deceive ourselves, and the truth is not in us.
It is by the grace of God that He helps us overcome sin (transgression of the law) ... not a "free ticket" to live in sin (transgression of the law). We have faith in Jesus that He will work in our hearts and help us overcome sin (transgression of the law) ... and He does.
Grace and faith is not a replacement of the law. It is the love of God working in ones heart to help us not to live in sin (transgression of the law) ... to overcome it through
His work in the believer.
Romans 2
12All who sin apart from the law will also perish apart from the law, and all who sin under the law will be judged by the law.
13For it is not the hearers of the law who are righteous before God, but it is the
doers of the law who will be declared righteous.
14Indeed, when Gentiles, who do not have the law, do by nature what the law requires, they are a law to themselves, even though they do not have the law.
15So they show that the work of the law is written on their hearts, their consciences also bearing witness, and their thoughts either accusing or defending them
16on the day when God will judge men’s secrets through Christ Jesus, as proclaimed by my gospel.