Moscow and all the Rus, he was a member of the Council for the Study of Religious Materials to identify extremist materials in the Ministry of Justice. He was the official representative of the Moscow Patriarchate in the Parliamentary Assembly of the Union of Belarus and Russia, a member of the Commission on organising state support and the development of original Cossack culture, a member of the Public Council under the Federal Drug Control Service, and a member of the Public Council under Rosreyestr. From 2010 to 2013, he was the executive secretary of the Interreligious Council of the Commonwealth of Independent States. On April 19, 2011 in the cathedral church of the Descent of the Holy Spirit of the stauropegial Conception Convent in Moscow, he was elevated to the rank of archpriest by the Patriarch Kirill of Moscow and All Russia. On 4 October 2012, the Holy Synod appointed him representative of the World Russian People's Council at the UN and assigned him to St Nicholas Cathedral in New York City. On 11 March 2014, with the blessing of Patriarch Kirill of Moscow and all Rus', the Superior of the Trinity Lavra of St. Sergius, Archbishop Theognost (Guzikov) of Sergiev Posad, tonsured him a monk with the name John in honour of St. John (Maximovitch) of Shanghai and San Francisco. A Holy Synod decision, on 25 July 2014, appointed him as Administrator of the Patriarchal Parishes in the USA, and vicar bishop of the Diocese of Moscow with the title of bishop . On July 28, 2014, Patriarch Kirill of Moscow and All Russia, at the Liturgy in the Cathedral of Christ the Savior, elevated him to the rank of archimandrite. On August 1, 2014, in Church of George the Great Martyr at Poklonnaya Hill during the Divine Liturgy the Episcopal Consecration of Archimandrite John (Roshchin) as Bishop of Naro-Fominsk was performed by: Patriarch Kirill of Moscow and all Russia, Metropolitan Juvenaly (Poyarkov) of Krutisty and Kolomna, Metropolitan Hilarion (Alfeyev) of Volokolamsk, Archbishop Mark (Golovkov) of Yegorievsk, Bishop Sergius (Chashin) of Solnechnogorsk. Primate of the Patriarchal Exarchate in Western Europe (PEWE) On 15 October 2018, the Holy Synod of the Russian Orthodox Church appointed him , in charge of the parishes of the Russian Orthodox Church in Italy. "On 28 December 2018,the Holy Synod appointed him as the primate of the Western Europe Exarchate, with the title "of Chersonesus