The Apostle Paul stated some have strayed from the good things of love, a pure heart and a good conscience, and have turned to fruitless discussion. How? By wanting to be teachers of law. The law from the Old Covenant had a purpose, but it was not meant for the righteous in Christ. It was a tutor to point people to faith and the promise of life found in Jesus Christ. Now that faith has come, the tutor is no longer needed. Instead of abiding in the letter that kills with a creed of "thou shall not," as believers we have the living God within to bear His fruit, against which there is no law.
The position we have proclaimed that the ministry of the Spirit of grace has replaced the Old Covenant of death and condemnation, will frequently lead to the accusation that we are sending the message it's okay to sin. Covenant mixers instinctively assume if we have no list of rules to live by, it encourages people to run wild and that behavior doesn't matter. Since their own spiritual identity has been bound to following rules, they have a hard time understanding the freedom from law that came through Christ and the new heart and motivation of love that is found in Him. Our growth in grace will change our perspective and our desires.