"Put on the new man, which after God is created in righteousness and true holiness" Ephesians 4:24.
Some hide behind counterfeit holiness. There are men who are just as unholy as the ones contented in sin-- but these wear something like a breastplate, a counterfeit holiness to save their reputation in the world. "Certainly, I say unto you, they have their reward" Matthew 6:2. And what a measly reward! You are doing the devil a double service, and God a double disservice, to march into battle armed with hypocrisy. First you draw the prince's expectations towards you as a soldier who will attempt courageous duties for him. But then when you do nothing he sees only a traitor taking up the place of a faithful subject armed for victory. You do your prince more harm than the coward who stays home, or rebelliously runs over the enemy's camp and tells him plainly what he intends to do.
Be serious, friends. If you are after holiness make, sure it is true holiness. "Put on the new man, which after God is created in righteousness and true holiness" Ephesians 4:24. Observe two phrases in that passage. Holiness is called the "new man after God"-- that is, according to the likeness of God. Such a sculpture is drawn from God's being, as an artist copies the face of a man. Also, "true holiness,” means a holiness of Scripture truth, not pharisaical and traditional doctrine; as well it means a holiness, which has as its point of reference the heart, which is the seat of truth or falsehood.
In order to have true holiness then, the Christian must have righteousness and holiness in his heart. Many people have beauty of holiness which is like the attractiveness of the body-- skin deep and all on the surface. If you tear open the most beautiful body on earth you will not find much except blood and stench; so also, when counterfeit holiness is exposed, it will have only an abundance of spiritual impurities and filth inside.”Quoted material from, ”The Christian in Complete Armour Daily Readings in Spiritual Warfare” by Gurnall and James S Bell. http://www.moodypublishers.com/pub_productDetail.aspx?id=41823&pid=53617