Analysis of information sources in references of the Wikipedia article "التعاليم الأرثوذوكسية الشرقية المتعلقة بالفيليوك" in Arabic language version.
Congar recalls three Eastern Fathers of the church from the fourth to the eighth centuries who asserted in one way or another a certain origin in being of the Spirit from the Son within the Trinity: Cyril of Alexandria, مكسيموس المعترف, and يوحنا الدمشقي.