Background
Ioannidis was born in Përmet, modern southern Albania (Northern Epirus).
theologian university professor
Ioannidis was born in Përmet, modern southern Albania (Northern Epirus).
He initially studied at the Halki seminary in Constantinople (Istanbul) and then continued his studies at the University of Oxford and Humboldt University of Berlin.
His research was focused on the analysis and the understanding (hermeneutics) of the New Testament. He became a professor of Theology at the University of Thessaloniki (1942–1951), and later at the Kapodistrian University of Athens (1952–1963). Ioannidis" research was focused on the interpretation (hermeneutics) of the New Testament, while in 1961 he cooperated with the reformist in the field of education and supporter of the Demotic Greek language, Alexandros Delmouzos.
He is considered among the most important 20th century theologians in Greece, along with the former Archbishop of Athens Ieronymos I, Christos Androutsos, Panagiotis Trembelas, Panagiotis Bratsiotis and Ioannis Karmiris.
Ioannidis together with another theologian, Amilkas Alivizatos, contributed significantly to the debates that led to the drafting of the "Toronto Statement", a foundational document which facilitated Orthodox participation in the organization and constitutes today its ecclesiological charter. Ioannidis was against the view that the Orthodox church should participate in discussions about Dogmatic theology.
On the other hand he believed that the discussions among the representatives of the various Churches should focus on social and political issues.
In 1952 Ioannidis became a member of the Northern Epirus lobby, headed by the exiled bishop of Gjirokastër, Panteleimon Kotokos, which propagated the rights of the Greek population in southern Albania.