Vatican City, Oct 6, 2015 / 10:26 am (CNA).- On Oct. 5, the opening day of the 2015 Synod on the Family, Cardinal Peter Erdo of Esztergom-Budapest -- who is the synod's relator general -- gave an introductory speech to the synod fathers. Drawing from the working document for the synod as well as recent magisterial documents, Cardinal Erdo surveyed the work the assembly is called to do. He examined current challenges to the family and marriage, the vocation of the family, and the family's mission today.