Our conscience is our heart. Our hearts were corrupted by the SinNature. Christ Jesus has made us a NewSpirit being through the NewBirth by His Word and HolySpirit.
Our Lord does not want us to experience guilt. Guilt undermines faith. This is why we have to believe that Christ Jesus has taken all sin and all the guilt associated with it and all the punishment for it upon Himself.
Without complete exoneration we could never walk in NewnessOfLife.
Believe and walk in eternal, abundant life.