The Church of the Assumption was built in the cemetery on the outskirts of the village of Losince in 1862 and was attached to the Torokan parish church. The consecration of the church on June 2, 1870 in the service of four priests was performed by the Antopolskiy district priest Foma Ballandowicz. At the end of the XIX century in the church there was a locally venerated icon of the Virgin Mary 0.

In “Inventory of Documents of the Vilnius Central Archive of Ancient Act Books. Issue X.”, March 1, 1580. One can see a record of the sale of Popina by Wojna Vasiliewicz Linewski and part of the lands of his brother Michal Wasil Linewski. The buyer is Bogdan Jackowicz Czernewski. The document mentions a functioning Orthodox church in Popina. From the entry in “Acts published by the Vilna Archaeological Commission.

Until the end of the XVIII century the owners of Chomsk were the Oginski family, unfortunately it is not known in what year they bought (or were given) the land. The first mention of the church just coincides with the dates when they were the owners of Homsk. According to the documents stored in RGIA, the oldest mention of the church in Chomsk as a Uniate church is a document from 1698 to 1801.