Simplify the following text for a Grade 10 native English-speaking person.
Original: First , for the first time a council of bishops listed and approved a canon of Sacred Scripture that corresponds to the modern Orthodox and Roman Catholic canon ( including the books classed by Roman Catholics as deuterocanonical books and by Protestants as `` Apocrypha '' ) .
Simplified: First , for the first time a council of bishops listed and agreed a canon of Sacred Scripture that is the same as the modern Orthodox and Roman Catholic canon .