Complex sentence: The Supreme Council of Bishops (SCB) consists of all serving and retired bishops, defines the doctrines of the Church, adopts and prescribes official liturgical rites, and gives pastoral and moral guidance to the faithful.
Split into simpler sentences: The Supreme Council of Bishops (SCB) consists of all serving and retired bishops. Its main tasks include maintaining and defining doctrinal orthodoxy, the adoption and prescription of liturgy, and the overall pastoral and moral guidance to the faithful.