I was specifically talking about this verse in the post you responded to. Furthermore, God has never given a system of works, but only a system of faith and love. God's law is instructions for how to do what is holy, righteous, and good (Romans 7:12) in accordance with His character, so they can not be done away with unless God's holiness, righteousness, and goodness are first done away with. As part of the New Covenant, we are still told to follow God's instructions for how to do what is holy, righteous, and good (1 Peter 1:14-16, 1 Peter 3:10, Ephesians 2:10).
You must have a pretty low opinion of God to think that He would save the Israelites out of bondage in Egypt only to put them back under bondage to His law and that throughout the Bible He was calling them from their freedom to sin and do what is right in their own eyes back to the bondage of doing what is holy, righteous, and good in obedience to His ways. Rather, as Galatians 5:1 states, it is for freedom that God sets us free, and God's law is a law of liberty (Psalms 119:45, James 1:25), while it is sin in transgression of God's law that puts us in bondage. It can't be disobedience and obedience to the law as it was intended that both put us in bondage. However, God's law can be perverted into a system of works that are about what we need to do in order to become justified, which would be living in just as much bondage as living in disobedience to the law. There is a world of difference between Paul saying that obeying God's law for the purpose of becoming justified is bondage and saying that obeying God's law is bondage. It is like hearing someone speaking against using a car to drive on the bottom of a lake and you concluding that they are against driving cars on roads.
Galatians 5:16-23 But I say, walk by the Spirit, and you will not gratify the desires of the flesh. 17 For the desires of the flesh are against the Spirit, and the desires of the Spirit are against the flesh, for these are opposed to each other, to keep you from doing the things you want to do. 18 But if you are led by the Spirit, you are not under the law. 19 Now the works of the flesh are evident: sexual immorality, impurity, sensuality, 20 idolatry, sorcery, enmity, strife, jealousy, fits of anger, rivalries, dissensions, divisions, 21 envy,[d] drunkenness, orgies, and things like these. I warn you, as I warned you before, that those who do[e] such things will not inherit the kingdom of God. 22 But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, 23 gentleness, self-control; against such things there is no law. 24 And those who belong to Christ Jesus have crucified the flesh with its passions and desires. 25 If we live by the Spirit, let us also keep in step with the Spirit.
It does not make any sense to interpret Galatians 5:18 as saying that if we are under the Spirit that we aren't under the Mosaic law because the law being talked about is one that is against God, not one that was given by God. I mean, are you suggesting that when God gave the Mosaic law that He gave a law that was against His Spirit? Rather, the Spirit has the role of leading us in obedience to God's law (Ezekiel 36:26-27). Everything that was listed as being works of the flesh that are against the Spirit are also against what the Mosaic law teaches and everything that was listed as being fruits of the Spirit are in accordance with what the Mosaic law teaches, which should come as no surprise because the Mosaic law was commanded by God and the Spirit is God. Rather, if we are led by the Spirit, then we are not under the law of sin, which is the same thing that Paul was saying in Romans:
Romans 6:14 For sin will have no dominion over you, since you are not under law but under grace.
It is not the Mosaic law where sin had dominion over us, but rather it was the law of sin. In Romans 7:12-23, Paul said that the Mosaic law is holy, righteous, and good, that it was the good he sought to do and delighted in doing, but contrasted that with a law of sin that was working within him to stir up sin and to cause him not to do the good that he wanted to do, so the Mosaic law is the opposite of the law of sin.
Everyone since Moses who has acted in love toward their neighbor has fulfilled the entire law. Jesus summarized the law as being about how to love God and how to love your neighbor (Matthew 22:36-40), so love fulfills the law because that is what it is essentially about how to do. All of the 613 commands in the OT and 1,050 commands in the NT are examples of how to correctly obey the greatest two commandments, so if you say all we need to do is follow God's command to love, so we don't need to follow His commands for how He wants us to love, then you are missing the point.
There is a theme throughout the Bible that we must obey God rather than man, and it should be extremely obvious that followers of God should follow God's commands, so Acts 15 should not be misunderstood as speaking against Gentiles obeying God's law when it is only against them obeying man's law. However, if you think that the Jerusalem Council tried to countermand God's law, then are you a follower of the Jerusalem Council or are you a follower of God? Jesus gave a perfect example of how to walk in obedience to God's law and we are told to follow his example (1 Peter 2:21-22) and to walk in the same way that he walked (1 John 2:3-6), or do you think that following Jesus is only for the Jews?