We are so accustomed to equating holiness with purity or ethical perfection that we look for the idea when the word holy appears. When things are made holy, when they are consecrated, they are set apart unto purity. They are to be used in a pure way. They are to reflect purity as well as simple apartness. Purity is not excluded from the idea of the holy; it is contained within it. But the point we must remember is that the idea of the holy is never exhausted by the idea of purity. It includes purity but is much more than that. It is purity and transcendence. It is transcendent purity.
R.C. Sproul