Albert Mohler, a Baptist, draws attention to a fatal confusion that plagues contemporary Christianity:
In our own context, one of the most seductive false gospels is moralism. This false gospel can take many forms and can emerge from any number of political and cultural impulses. Nevertheless, the basic structure of moralism comes down to this — the belief that the Gospel can be reduced to improvements in behavior.
Sadly, this false gospel is particularly attractive to those who believe themselves to be evangelicals motivated by a biblical impulse. Far too many believers and their churches succumb to the logic of moralism and reduce the Gospel to a message of moral improvement. In other words, we communicate to lost persons the message that what God desires for them and demands of them is to get their lives straight. . . .
The seduction of moralism is the essence of its power. We are so easily seduced into believing that we actually can gain all the approval we need by our behavior. Of course, in order to participate in this seduction, we must negotiate a moral code that defines acceptable behavior with innumerable loopholes. Most moralists would not claim to be without sin, but merely beyond scandal. That is considered sufficient.
Moralists can be categorized as both liberal and conservative. In each case, a specific set of moral concerns frames the moral expectation. As a generalization, it is often true that liberals focus on a set of moral expectations related to social ethics while conservatives tend to focus on personal ethics. The essence of moralism is apparent in both — the belief that we can achieve righteousness by means of proper behavior. . . .
Just as parents rightly teach their children to obey moral instruction, the church also bears responsibility to teach its own the moral commands of God and to bear witness to the larger society of what God has declared to be right and good for His human creatures.
But these impulses, right and necessary as they are, are not the Gospel. Indeed, one of the most insidious false gospels is a moralism that promises the favor of God and the satisfaction of God’s righteousness to sinners if they will only behave and commit themselves to moral improvement.