The stone church with two altars, dedicated to the Uncreated Image of the Savior and the Protection of the Most Holy Theotokos, was built in 1840. The feast days are celebrated here on August 29 and October 14. The church, like other classical structures, is characterized by geometric precision of forms, clear rhythm, harmony, logical planning, and strict symmetry. The main entrance from the west passes under a tiered bell tower. The first tier of the bell tower is adorned with pilasters of the Doric order, while the second tier is decorated with arches. The bell tower is topped with a spire and a cross on a small dome. The walls of the refectory are decorated with horizontal rustication, and the windows have arched finishes. The main building of the church is crowned with a large dome, and four small decorative domes are located at the corners. The northern and southern facades are adorned with pseudo-porticoes featuring Doric columns. The restrained decor gives the church a majestic appearance.

The church in Osinki was closed later than others in the district, only in 1939. The last priest was Peter Nikolaevich Chernavin, who had five sons, three of whom died during the Great Patriotic War. The locals also remember Priest Ivan Ivanovich Znamensky, who served in the 1920s.

During the persecutions against the Church, the chairman of the local collective farm, Ananiy Ivanovich Lipin, did not allow the church to be destroyed and set up a grain warehouse in it.

The church reopened in 1992, and the rector became the veteran of the Great Patriotic War, Father Raphael Petrovich Markelov. He took on the responsibility of restoring the church. The warden, Alexandra Mikhailovna Ivanicheva, and the treasurer, Anna Ivanovna Lyulina, sought benefactors and collected donations. Father Raphael, possessing "golden" hands, personally carried out many tasks: wood carving, roofing, painting, and wall restoration. For his kindness and dedication, he earned the respect and love of the parishioners.

A lot of effort was put into presenting the church in its current form. The priest himself created the iconostasis. The church was painted inside and whitewashed outside, crosses were installed, and the domes were renewed. Icon painters from Lyskov decorated the interior walls and dome with frescoes.

No matter from which side you look, from the east, west, or south, the Osinki church is visible as if on the palm of your hand. Our ancestors knew how to choose a place for God's temple. Today, it is not a dilapidated structure, but a snow-white church with silvery domes, like a lighthouse calling lost travelers.