If Apostle Paul had taught that God's laws are no more for those in Christ Jesus, then he would not have taught the following Scriptures, which he actually reveals specific sins we are to stay away from! And this is New Testament doctrine!
Gal 5:16-21
16 This I say then, Walk in the Spirit, and ye shall not fulful the lust of the flesh.
17 For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.
18 But if ye be led of the Spirit, ye are not under the law.
19 Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness,
20 Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies,
21 Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God.
KJV
1 Cor 5:9-11
9 I wrote unto you in an epistle not to company with fornicators:
10 Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world.
11 But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.
KJV
Don't even eat with those who do those sins! How ya gonna' know them if you don't know what the sins are? Where do we learn what those sins are? In God's Holy Writ.
1 Cor 6:9-10
9 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
KJV
Apostle Paul reminds brethren again, about sins that are against entering into the kingdom of God.
1 Peter 4:1-4
4:1 Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin;
2 That he no longer should live the rest of his time in the flesh to the lusts of men, but to the will of God.
3 For the time past of our life may suffice us to have wrought the will of the Gentiles, when we walked in lasciviousness, lusts, excess of wine, revellings, banquetings, and abominable idolatries:
4 Wherein they think it strange that ye run not with them to the same excess of riot, speaking evil of you:
KJV
Wow! Even Apostle Peter reminds brethren of the same sin trap that Paul warned the Churches about.
Rom 8:12-14
12 Therefore, brethren, we are debtors, not to the flesh, to live after the flesh.
13 For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live.
14 For as many as are led by the Spirit of God, they are the sons of God.
KJV
Once again Paul gives us the choice on how we live unto Christ, warning to not live after the flesh, which again HOW do we know how to do that? By The Holy Spirit guiding us first of all, and by study of ALL of God's Holy Writ with understanding by The Holy Spirit.
Eph 5:3-7
3 But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints;
4 Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks.
5 For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God.
6 Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.
7 Be not ye therefore partakers with them.
KJV
And yet again, Paul warns the Church against following sins of the flesh.
Col 3:2-10
2 Set your affection on things above, not on things on the earth.
3 For ye are dead, and your life is hid with Christ in God.
4 When Christ, Who is our life, shall appear, then shall ye also appear with Him in glory.
5 Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:
6 For which things' sake the wrath of God cometh on the children of disobedience:
7 In the which ye also walked some time, when ye lived in them.
8 But now ye also put off all these; anger, wrath, malice, blasphemy, filthy communication out of your mouth.
9 Lie not one to another, seeing that ye have put off the old man with his deeds;
10 And have put on the new man, which is renewed in knowledge after the image of Him That created him:
KJV
Again, Apostle Paul warns us as believers on Christ about going the wrong path, specifically spelling out certain sins again.
1 Tim 1:8-11
8 But we know that the law is good, if a man use it lawfully;
9 Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers,
10 For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;
11 According to the glorious gospel of the blessed God, which was committed to my trust.
KJV
No room for doubt there. Paul made it plain that those who follow after those works of the flesh are definitely under the law.
In Summary:
IF... we walk in Christ by The Spirit, only THEN are we not under God's laws. We won't be doing anything against God's law in that case. Doing what is right according to God's Word there is no law against (Galatians 5). Because Apostle Paul gave so many warnings to the Churches about this, even spelling out specific sins of the flesh we are to not be found doing, that means we still need to be on watch of ourselves in not sinning. And when we do slip up, we repent and ask Him forgiveness and make a change.
Gal 5:16-21
16 This I say then, Walk in the Spirit, and ye shall not fulful the lust of the flesh.
17 For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.
18 But if ye be led of the Spirit, ye are not under the law.
19 Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness,
20 Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies,
21 Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God.
KJV
1 Cor 5:9-11
9 I wrote unto you in an epistle not to company with fornicators:
10 Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world.
11 But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.
KJV
Don't even eat with those who do those sins! How ya gonna' know them if you don't know what the sins are? Where do we learn what those sins are? In God's Holy Writ.
1 Cor 6:9-10
9 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
KJV
Apostle Paul reminds brethren again, about sins that are against entering into the kingdom of God.
1 Peter 4:1-4
4:1 Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin;
2 That he no longer should live the rest of his time in the flesh to the lusts of men, but to the will of God.
3 For the time past of our life may suffice us to have wrought the will of the Gentiles, when we walked in lasciviousness, lusts, excess of wine, revellings, banquetings, and abominable idolatries:
4 Wherein they think it strange that ye run not with them to the same excess of riot, speaking evil of you:
KJV
Wow! Even Apostle Peter reminds brethren of the same sin trap that Paul warned the Churches about.
Rom 8:12-14
12 Therefore, brethren, we are debtors, not to the flesh, to live after the flesh.
13 For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live.
14 For as many as are led by the Spirit of God, they are the sons of God.
KJV
Once again Paul gives us the choice on how we live unto Christ, warning to not live after the flesh, which again HOW do we know how to do that? By The Holy Spirit guiding us first of all, and by study of ALL of God's Holy Writ with understanding by The Holy Spirit.
Eph 5:3-7
3 But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints;
4 Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks.
5 For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God.
6 Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.
7 Be not ye therefore partakers with them.
KJV
And yet again, Paul warns the Church against following sins of the flesh.
Col 3:2-10
2 Set your affection on things above, not on things on the earth.
3 For ye are dead, and your life is hid with Christ in God.
4 When Christ, Who is our life, shall appear, then shall ye also appear with Him in glory.
5 Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:
6 For which things' sake the wrath of God cometh on the children of disobedience:
7 In the which ye also walked some time, when ye lived in them.
8 But now ye also put off all these; anger, wrath, malice, blasphemy, filthy communication out of your mouth.
9 Lie not one to another, seeing that ye have put off the old man with his deeds;
10 And have put on the new man, which is renewed in knowledge after the image of Him That created him:
KJV
Again, Apostle Paul warns us as believers on Christ about going the wrong path, specifically spelling out certain sins again.
1 Tim 1:8-11
8 But we know that the law is good, if a man use it lawfully;
9 Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers,
10 For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;
11 According to the glorious gospel of the blessed God, which was committed to my trust.
KJV
No room for doubt there. Paul made it plain that those who follow after those works of the flesh are definitely under the law.
In Summary:
IF... we walk in Christ by The Spirit, only THEN are we not under God's laws. We won't be doing anything against God's law in that case. Doing what is right according to God's Word there is no law against (Galatians 5). Because Apostle Paul gave so many warnings to the Churches about this, even spelling out specific sins of the flesh we are to not be found doing, that means we still need to be on watch of ourselves in not sinning. And when we do slip up, we repent and ask Him forgiveness and make a change.