established church BrE
established religion BrE

"I think we should really temper making genetics the established religion of our country."

Islam was the established religion, and as such its institutions received government support.

Though she may turn her back on established religion, she has high moral standards.

The paradox is that science seemed to have access to signs and wonders no longer available within established religion.

Australia is a majority Christian but pluralistic society with no established religion.

He was glad to go, and became the first person in Europe to live successfully beyond the reach of established religion.

Government support for an established religion was associated with the original French "right wing."

Under its current setup, the country is less a theocracy than a civil society with an established religion.

Though Israel is a democracy with an established religion, it can find positive values in its diversity.

They designed a national government that, for the first time in Western history, had no established religion at all.