Leviticus 19
1 The Lord spoke to Moses, saying:
2 Speak to all the congregations of Israel and say to them:
You shall be holy, for I the Lord your God am holy.
For me, this is a definition of righteousness, and righteousness comes before justice and justice comes before peace.
Day four had a quotation from Laurence Freeman in which he said: "Holiness is the presence of God in the human beings who are God's image. Becoming holy is then simply the conscious reunion of image and original."