The Antidicomarians or Antidicomarianites,[1] also called Dimoerites,[2] were a Christian sect active from the 3rd to the 5th century.
[4] The existence of the Antidicomarians as an organized sect may be doubted, as it is attested only in Epiphanius, but the doctrines he attributes to them were certainly matters of live debate in the late 4th century.
[5] The Antidicomarians refused to accord any special status to Mary, mother of Jesus, and rejected the doctrine of her perpetual virginity.
[3] They viewed the brothers of Jesus mentioned in the New Testament as Mary and Joseph's other children.
He wrote a letter defending the majority opinion about Mary to the Christians of Arabia, a copy of which he included in his Panarion.