Priesthood and episcopacy
Rinne joined the Orthodox Church in 1966, and he received a doctorate in theology from Finland's Åbo Akademi University in 1966. In 1967 he received monastic tonsure in the Monastery of Saint John the Theologian in the island of Patmos (Greece). Following his ordination to the diaconate and priesthood at the Ecumenical Patriarchate, in 1969 he was elected and consecrated Bishop of Lapland, Auxiliary to the Archbishop of Karelia and All Finland, of the autonomous Finnish Orthodox Church.
In 1971 Rinne received a doctorate in canon law from the University of Thessaloniki. He was appointed as the Metropolitan of Helsinki in 1972, a position he held until 1987. He was elected Archbishop of Karelia and All Finland and head of the autonomous Finnish Orthodox Church in 1987. He went into retirement in 2001, receiving from the Ecumenical Patriarchate the title of Metropolitan of Nicaea.
Rinne died on 1 July 2010.