The universal call to holiness is a teaching of the Roman Catholic Church that all people are called to be holy, and is based on Matthew 5:48: "Be you therefore perfect, as also your heavenly Father is perfect" (Matthew 5:48). In the first book of the Bible, the call to holiness is expressed in the Lord's words to Abraham: "Walk before me, and be blameless" (Genesis 17:1).[1]