There are few theological aberrations more difficult to define than antinomianism. Some simply look at the etymology of the word and conclude that antinomians are against (anti) God's law (nomos). Others are a bit more specific, suggesting that antinomians are those who deny the third use of the law (the law as a guide for the Christian life; for example, Eph. 6:1) as normative for the Christian believer. Still others contend that we should distinguish between theoretical antinomianism—just described—and practical antinomianism.
Practical antinomianism may take on two forms. The first group are those who claim to be Christians but openly disregard God's law in their lives. The second group are preachers who claim that they affirm the need for the moral law in the Christian life, but their preaching betrays this affirmation because there are almost never any exhortations in their sermons.