Often when I try to show professing Christians they must keep the moral law of Christ or their faith is dead (Jam 2:17) I get accused of legalism or of being a Pharisee. Most people misunderstand what legalism really is. I would consider a good example of legalism today to be those that require you to keep sect rules and say you are not saved if you don’t.
Wikipedia has one of the better definitions of legalism I have seen and one I pretty much agree with.
Legalism, in Christian theology, is a pejorative term referring to an over-emphasis on law or codes of conduct, or legal ideas, usually implying an allegation of misguided rigor, pride, superficiality, the neglect of mercy, and ignorance of the grace of God or emphasizing the letter of law over the spirit. Legalism is alleged against any view that obedience to law, not faith in God’s grace, is the pre-eminent principle of redemption. Its opposite error is antinomianism, which is alleged against a view that moral laws are not binding.
I find that many professing Christians will accuse you of legalism if you hold that Christians must be obedience to the moral law of Christ. I am not talking about sect rules here I am talking about the moral law of Christ as we find it in the New Testament. They that hold that the moral law of Christ is not binding are what I would call antinomians.
Dictionary.com definition of antinomianism — a person who maintains that Christians are freed from the moral law by virtue of grace as set forth in the gospel.

August 11th, 2008 at 9:28 pm
In this post you mention a couple of times “Christians must be obedient to the moral law of Christ”. Two questions, 1) what is the moral law of Christ? (Ten Commandments?) 2) what do you mean by “must be obedient”? What happens if they aren’t? Does that prove that they were never really children of God afterall? Does it mean they won’t be able to live a life free from sin?
August 11th, 2008 at 10:38 pm
Hi christophmcleod; The ten commandments has one ceremonial law which is Saturday keeping.
The moral law of Christ is the New Testament law. I would consider the Old Testament covenant or law (moral, ceremonial, civil) replaced by the New Testament covenant or law. Most commandments in the New Testament covenant are moral but there are some ceremonial like baptism.
I don’t believe that willful sin is compatible with true faith. If a Christian is willfully disobedient to a known law of Christ they no longer have true faith and need to do there first works over again and be saved. I won’t says some one that goes back into sin after being saved was never saved.
I hold that all Christians live a life free from willful sin.