When one preaches the gospel of Jesus Christ there are usually religious legalists who claim that it produces antinomianism. Lloyd-Jones said this is a good sign:
There is no better test as to whether a man is really preaching the New Testament gospel of salvation than this, that some people might misunderstand it and misinterpret it to mean that it really amounts to this, that because you are saved by grace alone it does not matter at all what you do; you can go on sinning as much as you like because it will redound all the more to the glory of grace. That is a very good test of gospel preaching. If my preaching and presentation of the gospel of salvation does not expose it to that misunderstanding, then it is not the gospel.
From Martyn Lloyd-Jones, Romans: A New Man, 8-9. Quoted in Jared Wilson, Gospel Wakefulness, 114.