Even so that fact does not turn us loose on a campaign against complying with "do not take God's name in vain" Ex 20:7 or "Love God with all your heart" Deut 6:5
That would be going from one extreme to another. Paul clearly asks: "Shall we continue in sin that grace may abound? God forbid! How can we who are dead to sin continue in it?"
The point that I have been making all along is that teaching strict obedience to the Law is hypocritical because even the best of those who teach it are constantly breaking the Law themselves.
Also, a church that teaches strict obedience to a set of rules based on the Ten Commandments is not God's church at all, but a man-made religious sect that purports to follow God's Word, but actually teaches grace plus works, which is not the Gospel of Christ.
The notion that people who are depending on Christ alone for salvation and sanctification are allowing themselves to continue in a wilful sinful lifestyle under the banner of free grace, is nonsense. Even John Calvin himself calls such people "fanatics".
Even Paul, in Romans 7, struggles with his inability to do the things that are in his heart toward God, and his tendency to do the things he would rather not do. He says that he values the Law of God in his heart, but is unable to keep it. He cries out, "Who shall deliver me from the body of this death?" He then goes to the only Person he knows who can: "I thank God through Jesus Christ." He goes on to say, "The Law of the Spirit of Life in Jesus Christ has set me free from the Law of Sin and Death."
The Ten Commandments make up the Law of sin and death, because they show our sinfulness and that because we cannot keep them, how that we have fallen short of the glory of God. Therefore, the Ten Commandments are our tutor to lead us to Christ. Once we are in Christ, the Ten Commandments have fulfilled their purpose and are set aside as a set of external rules. The new Law of the spirit of life in Christ is written on our hearts and as we keep our eyes and hearts on Christ, the Holy Spirit works in us to conform us to the image of Christ.
A church that forces its members to comply with an external set of rules based on the Ten Commandments as a requirement for membership is not God's church because it is rooted in the Old Covenant with its requirement to comply with the works of the Mosaic Law. It is not based on the grace of God through faith in Christ. True, it may name Christ and talk about grace and faith, but unless the person agrees to follow the church's set of rules, they would never be given the right hand of fellowship.
