“You must be holy, for I am the Lord your God am holy” could be described as the motto of Leviticus. This motto reminds Israel of its fundamental calling to be a “holy nation” (Exodus 19:6). The people of Israel are to imitate God, whose essential nature is holiness.
Holiness is thus not so much an abstract or a mystic idea, as a principle that regulates everyday life. Holiness is thus attained not be flight from the world, nor by monk-like renunciation of human relationships of family or station, but by the spirit in which we fulfill the obligations of life in its simplest and commonest details: in this way – by doing justly, loving mercy, and walking humbly with our God – in everyday life we are changed.
The view and importance of holiness has not changed in our era. We are still judged by our works among those who surround us. If we claim to be a Christian we must show forth His love and concern for mankind through our own benevolent works.