The Word of God everywhere enforces the truth that true holiness involves, on the one hand a life of separation, and on the other what we might call a life of proclamation, or a life of witness for God. In other words, holiness, in its outward manifestation, is both negative and positive. The Book of Psalms begins, for example, with a description of the happy or blessed man. “Blessed is the man that walketh not in the counsel of the ungodly, nor standeth in the way of sinners.” When, in other days, Satan walked to and fro on the earth he saw one man who had no spiritual counterpart in his age. “And the Lord said unto Satan, Hast thou considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that feareth God and escheweth evil.” Rather than defile their garments by following the evil course of this world, Daniel’s young friends in the Lord chose to be cast into the furnace of fire. “Have no fellowship with the unfruitful works of darkness, but rather reprove them.” Although we are in the world, we are not of the world. The so-called “good religious mixers” of this age who think they can serve God, while at the same time they crawl in the sewers of a sinful world, are far removed from this way. “Without holiness no man shall see the Lord” or dwell in His presence. Holiness is the very air which the inhabitants of the new Jerusalem breathe, “for there shall in no wise enter into it any thing that defileth neither whatsoever worketh abomination.” True holiness is congenial only to the new man in Christ, while to the graceless man it is hateful and repugnant.

But holiness has also its positive side. It is not mere separation. It is a witnessing by our life and conversation whose we are and whom we serve. “Ye,” said our Lord, “are the light of the World. A city that is set on an hill cannot be hid. Neither do men light a candle, and put it under a bushel, but on a candlestick, and it giveth light unto all that are in the house. Let your light so shine before men.” Daniel was a man who, by his holy walk, shone like a lone star in the prevailing darkness.
~ Murdoch Campbell [extract from The God of Bethel ]