KYIV, Ukraine — Packing a cathedral for Orthodox Christmas, hundreds of worshippers heard the service in that church in the Ukrainian language for the first time in decades, a demonstration of independence from the Russian Orthodox Church.

Richly decorated with golden icons and panels, the cathedral — part of the complex known as the Monastery of the Caves and a UNESCO World Heritage Site — put up a video screen outside for the overflow of worshipers, despite the frigid temperatures of -10 Celsius (14 F).

Overlooking the right bank of the Dnieper River, the cathedral and monastery complex has been a pilgrimage site for centuries. And for the first time in the 31 years of Ukraine’s independence, the service there was held in the Ukrainian language. Ukrainian army troops in uniform were among those singing well-known Ukrainian carols.

Ukraine’s government on Thursday took over the administration of the Dormition Cathedral at the Kyiv-Pechersk monastery and allowed the Orthodox Church of Ukraine to use it for the Orthodox Christmas service. The move highlights the long-running tensions between the two churches exacerbated by Russia’s war in Ukraine.

The cathedral. built about 1,000 years ago then rebuilt in the 1990s after being ruined in World War II, had been under control of the Ukrainian Orthodox Church, which formerly had ties with the Russian Orthodox Church.

“It’s a first victory” for Ukraine, said Oksana Abu-Akel who hailed it as a significant step for Orthodox believers to cut ties with Russia after it started the war more than 10 months ago. “This is the first time in 300 years that there is really our own service here. Every person feels this joy. It is a victory for all Ukrainians.”

Ukrainian Culture Minister Oleksandr Tkachenko said Thursday that the cathedral had been taken over by the state after the lease of the Moscow-affiliated church expired on Dec. 31. Tkachenko attended the service Saturday.

“It’s an amazing moment. Previously this place — on Ukrainian territory, within Kyiv — has been linked to Moscow. Now we feel this is ours, this is Ukrainian. This is part of the Ukrainian nation,” said Alex Fesiak, who attended the service.

In 2019, the Orthodox Church of Ukraine received recognition from the Ecumenical Patriarch of Constantinople. Moscow’s and most other Orthodox patriarchs refused to accept that designation that formalized a split with the Russian church.

The Ukrainian Orthodox Church (UOC), which remained loyal to the Moscow patriarch since the 17th century, declared independence from Moscow’s Patriarchate after Russia’s invasion of Ukraine. The UOC gave Moscow a liturgical cold shoulder by dropping the commemoration of Moscow Patriarch Kirill as its leader in public worship and blessing its own sacramental oil rather than use Moscow’s supply.

Metropolitan Epiphanius, the primate of the Orthodox Church of Ukraine, spoke not just about Christmas but delivered a political message about the war.

“As a nation, we sought to live peacefully, having a good understanding with all our neighbors. But the enemy meanly and treacherously broke the peace and invaded our land, shedding blood, sowing death and wanting to destroy our statehood and our very Ukrainian identity,” he said during the service.

“Those who held us in captivity could not endure our achievements and our success,” he said. “The devil’s malice and envy prompted them to make war, but they are sure to be defeated. After all, the truth is on our side.”

Natalia Levshyna said her husband couldn’t come to the Christmas service as he is fighting on the front line, but she will send him photos of the service as it’s very important to him. Originally from Donbas, she said she stopped attending the church of the Moscow Patriarchate in 2014, when Russia annexed the Crimean Peninsula and supported the conflict in the eastern part of Ukraine.

“Our emotions are running high,” she said, barely holding back tears, describing her conviction that the Ukrainian church on Ukrainian soil should be independent from the Russian Orthodox Church.

“Our church must be synchronized with state policy. They must be one,” Levshyna said.

Others in Ukraine have decided to distance themselves from the Russian Orthodox Church by celebrating Christmas on Dec. 25.

On Friday, the Church of Moscow Patriarchate condemned the Ukrainian plans to hold a service in the Kyiv cathedral as “an attempt to forcefully seize … the cathedral by means of blackmail and misinformation of society.”

In 2019, the Orthodox Church of Ukraine received recognition from the Ecumenical Patriarch of Constantinople, but the Moscow’s patriarch refused to accept that.

The Ukrainian Orthodox Church declared independence from Moscow’s Patriarchate after Russia’s invasion of Ukraine on Feb. 24, ending the Ukrainian church’s loyalty to the Moscow patriarch which dated back to the 17th century. The Ukrainian Orthodox Church removed Moscow Patriarch Kirill as its leader in public worship and now uses its own sacramental oil for blessings rather than oil supplied by Moscow.

But Ukrainian security agencies have claimed that some in the Ukrainian church have maintained close ties with Moscow. They’ve raided numerous holy sites of the church and later posted photos of rubles, Russian passports and leaflets with messages from the Moscow patriarch as proof that some church officials have been loyal to Moscow.

Prominent Ukrainian Orthodox Church leaders have rejected the allegations of ties with Moscow, insisting that they have loyally supported Ukraine from the start of the war and that a government crackdown will only hand a propaganda coup to Russia.