To be holy is to be morally blameless. It is to be separated from sin and, therefore, consecrated to God. The word signifies separation to God, and the conduct befitting those so separated… To live a holy life, then, is to live a life in conformity to the moral precepts of the Bible and in contrast to the sinful ways of the world. It is to live a life characterized by the “(putting) off of your old self, which is being corrupted by its deceitful desires… and (putting) on the new self, created to be like God in true righteousness and holiness” (Ephesians 4:22, 24).
Jerry Bridges