Rom 6:22 “ But now having been set free from sin, and having become slaves of God, you have your fruit to holiness, and the end, everlasting life.”
II Cor 7:1 Therefore, having these promises, beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God.
To understand holiness we need to understand purity. Purity in a marriage reflects the faithfulness between the couple. That means wife or husband is not used by others or seeking to fulfill their desires with others. Purity in merchandise like gold tells us whether that product is free from impurities or defects. There is a level or scale to measure the purity in the later and there is nothing like that in the former; it is either pure or impure. Let us put it in perspective: There is desire of God (rightful Owner under the covenant), desire of an attractive man (lust of the eyes), desire of a wealthy man (Unrighteous mammon), and desire of worldly man (lust of the world). If a bride or a wife fulfills the desire of other men while living under the rightful Owner and trying to please both extremes, then she reflects the deeds of a harlot. Moreover, if she is only trying to please other than the Rightful Owner, then she reflects the deeds of a ‘Brazen Harlot’. The purity of faithfulness is to fulfill the desire of the rightful owner only. The later purity (like in gold) is the level of perfection in which the bride or wife cleansed from the impurities inherited by nature. The impurities such as anger, stubbornness, gossip etc has to be removed to live with her husband in harmony. The Bridegroom, look at His church for holiness in terms of faithfulness and perfection. These are the two kinds of purity. The faithfulness and our level of perfection determine our holiness.