After the end of his term of exile in 1934, Fr. Theophan did not have the right to reside in the ten largest cities of the country (minus 10), registered in Vladimir, but lived in Nizhny Novgorod with his spiritual children.

In 1935, Fr. Feofan was arrested in Nizhny Novgorod together with Metropolitan Yevgeny (Zernov), priests Nicholas the Great and Peter Novoselsky for celebrating the Paschal service on May 1, 1935.

On November 4, 1935, he was sentenced under Article 54, Paragraph 10 of the Criminal Code "for propaganda of a counter-revolutionary orientation against the measures of the Soviet government" to 3 years in the Gulag. He was sent to Karlag.

On October 16, 1937, he was arrested by the NKVD of the Karaganda region on the grounds that "while serving his sentence in Karlag, V.I. Adamenko, as well as N.A. Romanovsky, as part of a group of former priests, participated in the organization of the "True Orthodox Church", which, in addition to Fr. Feofan and Fr. Nikolai Romanovsky, also included Bishop Sergius (Zverev) of Yeletsk.

During interrogations, Fr. Feofan "pleaded not guilty, did not deny participation in meetings and religious rites."

By the decision of the troika of the NKVD in the Karaganda region of November 20, 1937, Hieromonk Feofan (Adamenko) was convicted under Article 58-10-11 and sentenced to the supreme penalty - shooting, which, according to an extract from the act, was carried out.

The place of burial is not known.

In October 1943, Sergius (Stragorodsky), who had recently been elected Patriarch of All Russia, sent a petition to the Council for the Affairs of the Orthodox Church under the Council of People's Commissars of the USSR for amnesty for a number of imprisoned clergymen whom he "wished to involve in church work." The list attached to the petition contained the names of 25 bishops and one priest, Fr. Adamenko. In fact, by that time, only one person from the entire list remained alive, the rest were shot or died in prisons and camps.

By the decision of the Presidium of the Karaganda Regional Court of November 28, 1957, the decision of the Troika of the NKVD for the Karaganda Region of October 20, 1937 in relation to Hieromonk Feofan (Adamenko) was canceled "for lack of evidence of the corpus delicti."

Commemoration with the Synaxis of the New Martyrs.

I. The order of the All-Night Service.

Prayer at the entrance to the temple. "I rejoiced when they said to me, 'Let us go to the house of the Lord.' And I, according to the abundance of Thy mercy, will enter into Thy house, I will worship Thy holy temple in Thy fear. O Lord, guide me in Thy righteousness, for the sake of my enemies; level Thy way before me, that I may glorify without stumbling the one Divinity of the Father and the Son of the Holy Spirit, now and always, and unto the ages of ages. Amen." (Psalm 121; I, 5; 8–9).

Prayer at the entrance to the church. "I worship Thee, the Lord my God, Who by His grace dwellest in this holy temple, and especially in the Most Pure and Life-Giving Mysteries; I bow the knee of my heart before Thee, the true Christ my Saviour. I also worship Thy Immaculate Mother, the Most Pure Lady Virgin Mary Theotokos, Helper, Intercessor, Intercessor, the only Hope and Hope in my salvation. I venerate the holy Angel, Thy servant, who always guards Thy Divine Altar. With love I kiss all Thy saints, depicted on icons and reposing in relics. And I beseech Thee, my good Lord, that Thy ears may always be attentive to the prayerful voice of the people who pray to Thee in this holy temple; and remember his departed parishioners in Thy heavenly Kingdom, forgiving all their sins, as eternally Good and Merciful. Amen."

The priest, having come to the holy church, putting on the stole and standing before the Royal Doors, exclaims: