The Apocrypha, or the Deuterocannon as Catholics refer to them, refer to the books of Tobit, Judith, 1 & 2 Maccabees, Wisdom, Sirach, Baruch, and parts of Esther and Daniel. These books were a part of Greek translation of the Hebrew bible known as the Septuagint. The Septuagint was commonly used by the early church.

It wasn't until the 4th Century when the Catholic Church decided which books would be part of the Bible. Before that there was no definite list of divinely inspired books used by all Christians. The Deuterocannonical books of the Septuagint were considered divinely inspired and a part of the bible. It was in the 16th Century when Protestant Reformers began rejecting the Apocrypha.