We are justified by faith alone, saved by grace alone, and redeemed from our sin by Christ alone. Moralism produces sinners who are (potentially) better behaved. The Gospel of Christ transforms sinners into the adopted sons and daughters of God.
The Church must never evade, accommodate, revise, or hide the law of God. Indeed, it is the Law that shows us our sin and makes clear our inadequacy and our total lack of righteousness. The Law cannot impart life but, as Paul insists, it “has become our tutor to lead us to Christ, so that we may be justified by faith.” [Gal. 3:24]
The deadly danger of moralism has been a constant temptation to the church and an ever-convenient substitute for the Gospel. Clearly, millions of our neighbors believe that moralism is our message. Nothing less than the boldest preaching of the Gospel will suffice to correct this impression and to lead sinners to salvation in Christ.
Hell will be highly populated with those who were “raised right.” The citizens of heaven will be those who, by the sheer grace and mercy of God, are there solely because of the imputed righteousness of Jesus Christ.
Moralism is not the gospel.