<P> The Universal Call to Holiness and Apostolate is a teaching of the Roman Catholic Church that all people are called to be holy, and is based on Matthew 5: 48--"Be ye therefore perfect, as also thy heavenly Father is perfect ." </P> <P> The universal call to holiness has always been a teaching of the Church and is rooted in Her mission to take sinners and raise them from their sinful nature into saints by the glory and perfection of Jesus Christ . For God does not choose us by our virtue or goodness, but by His infinite mercy and desire for all men's salvation . An example of this teaching can be found in the Introduction to the Devout Life of Francis de Sales . Written in the 17th century, it describes a method to approach holiness in everyday life . </P>

Summarize the meaning of the universal call to holiness