John Bunyan: Righteousness is in Christ Alone

John Buynan on the importance of understanding imputation:

It is absolutely necessary that this [doctrine of imputation] be known of us; for if the understanding be muddy as to this, it is impossible that such should be sound in the faith; also in temptation, that man will be at a loss that looketh for a righteousness for justification in himself, when it is to be found nowhere but in Jesus Christ. (John Bunyan, Justification By An Imputed RIGHTEOUSNESS -OR- No Way to Heaven but by JESUS CHRIST)