In 1961, he was elected Metropolitan of Warsaw and all Poland with overt support from Polish state authorities, and in violation of the procedures outlined in the Church's Internal Statute, which led to protests from clergy and believers.

[7] On 27 November 1938, at the Pochaiv Lavra, he received episcopal consecration from the hands of Dionysius Waledyński, Metropolitan of Warsaw and all Poland.

However, the ruling hierarch of the Diocese of Warsaw and Chełm since November 1939, Metropolitan Seraphim Lade of Berlin and Germany, sent him back to the monastery due to his pro-Polish views.

[13] On 10 August 1944, the chairman of the Polish Committee of National Liberation, Edward Osóbka-Morawski, agreed to his temporary administration of the Diocese of Chełm and Podlachia.

[14] During his supervision of the aforementioned administration, the deportation of Ukrainians to the USSR took place, leading to the closure of over 160 pastoral facilities due to lack of parishioners.

Timothy (Szretter) did not protest against this; in a formal letter at the turn of 1944 and 1945, he stated that leaving the parishes in Lublin, Chełm, Biała Podlaska, Hrubieszów, and Włodawa in his area of responsibility would be sufficient.

[16] In 1946, the Department of Denominations of the Ministry of Public Administration began to suggest to Dionysius, Metropolitan of Warsaw and all Poland, to resign from his office (ultimately, the clergyman was forced to do so).

[27] Archbishop Timothy, like the other bishops of the Polish Orthodox Church, maintained a loyal relationship with the state authorities.

[30] Earlier, in 1950, he facilitated the opening of the Orthodox Theological School in Warsaw, later transformed by Metropolitan Macarius into a seminary.

[31] After 1956, Archbishop Timothy effectively began to manage the entire church again due to Metropolitan Macarius' advanced age and poor health.

[32] In 1957, the Office for Religious Affairs considered the idea of removing Metropolitan Macarius and reinstating Archbishop Timothy as the locum tenens.

[33] Timothy was described as an intelligent, tactful individual who understood the situation and was ready to carry out the authorities' orders even when they were not favorable to him (such as in the matter of filling the office of metropolitan).

During the same period, Timothy was registered by the Department IV of the XI Public Security Committee as a "confidential contact" under the pseudonym Beard Man (Polish: Brodacz), although due to the destruction of documentation, it is not possible to determine the nature of his collaboration with the services.

[34] After Macarius' departure to the USSR and his death in Odesa in 1961, the state authorities brought about the election of Timothy as metropolitan (since December 1957, he had been again the locum tenens).