Newlyweds Amir and Hui Rong should be enjoying their honeymoon this week " but just hours after their wedding on Saturday the bride was taken back to Villawood Immigration Detention Centre to face an uncertain future.

It was a happy day tinged with sadness for 25-year-old asylum seeker Hui Rong Lin and former refugee Amir Mesrinejad, who were married in front of over 200 friends at St Paul's, Carlingford on the weekend.

"I was devastated for her, and I'm as devastated as she is," Amir says.

"I've taken a very serious step in my life and I want to have my wife there with me.

“[But] it's out of my control and there's nothing we can do."

A spokeswoman from the Department of Immigration and Multicultural Affairs said it was not the first time that a detainee has been allowed to get married in the community.

However, the couple had initially thought they wouldn't be allowed to do so and did not apply for permission, expecting to hold the ceremony behind the barbed wire.

An official from the company that runs the detention centre, Global Solutions Limited, accompanied Hui Rong between the hours of 9am and 4pm that she and a bridesmaid were allowed out from detention.

Hui Rong is seeking refugee status in Australia after fleeing alleged harassment from authorities in China.

She has been detained for over two years, during which time she met Amir, who was a fellow detainee until last year.

Her appeal is currently before the Federal Court.

Amir, a former Muslim who fled persecution and torture in Iran, was given permanent residency in Australia in September after spending five and half years inside the detention centre.

He now works as ministry trainee with St Paul's and has a pastoral ministry to Iranians in Sydney.

The couple came to Christ while detained through meeting Stewart and Helen Binns, pastoral workers at St Paul's.

Amir says he and Hui Rong are thrilled that immigration officials granted the couple permission to get married in a church.

"I was just grateful to the Lord that he allowed this," he said.

"We have put our trust in the Lord and I am confident that [he] is in control, and I know he always makes good out of bad situations."

St Paul's Senior Assistant Minister, the Rev James Davidson, who married the couple, said it was a day of "remarkable and unusual praise to God' that showed that the Lord works through human suffering.

"His good purposes are worked out through the evil actions of evil people," he said in his sermon at the wedding.

"Amir and Hui Rong have suffered much and still suffer,” he said.

“This particular marriage is an example of the way God works through great difficulty in their lives."

He said the day was one of "soul searching' for Australia and the government over its treatment of asylum seekers.

"We ask ourselves, is there any possible reason why our government can have treated them the way they have?" he asked.

"For me, the answer is none. We must acknowledge that these policies that have been set up had some terrible consequences."