From Our Reformed Doctrinal Standards
The Heidelberg Catechism
Questions and Answers 2; 87-90
Q. 2. How many things are necessary for thee to know, that thou, enjoying this comfort, mayest live and die happily?
A. Three; the first, how great my sins and miseries are; the second, how I may be delivered from all my sins and miseries; the third, how I shall express my gratitude to God for such deliverance.
Q. 87. Cannot they then be saved, who, continuing in their wicked and ungratful lives, are not converted to God?
A. By no means; for the Holy Scripture declares that no unchaste person, idolator, adulterer, thief, covetous man, drunkard, slanderer, robber, or any such like, shall inherit the kingdom of God.
Q. 88. Of how many parts doth the true conversion of man consist?
A. Of two parts; of the mortification of the old, and the quickening of the new man.
Q. 89. What is the mortification of the old man?
A. It is a sincere sorrow of the heart, that we have provoked God by our sins; and more and more to hate and flee from them.
Q. 90. What is the quickening of the new man?
A. It is a sincere joy of heart in God, through Christ, and with love and delight to live according to the will of God in all good works.