Tell me not of your justification, unless you have also some marks of sanctification. Boast not of Christ's work for you, unless you can show us the Spirit's work in you.
It is entirely by the intervention of Christ's righteousness that we obtain justification before God. This is equivalent to saying that man is not just in himself, but that the righteousness of Christ is communicated to him by imputation, while he is strictly deserving of punishment.
Any church which puts in the place of justification by faith in Christ another method of salvation is a harlot church.