The BBC received more than 1,200 complaints after the programme Songs of Praise broadcast its first gay wedding.
Some Christian viewers were incensed by the decision to air the ceremony on the BBC1 show on August 18.
Jamie Wallace, 27, and Ian McDowall, 39, were filmed as they tied the knot in the Rutherglen United Reform Church, near Glasgow, as part of Songs of Praise's Faith and Marriage episode.
The pair became the first same-sex couple to get married in the church after the congregation decided to support the move.
The United Reformed Church is one of the few Christian denominations to allow gay marriages, unlike the Church of England which has a ban on such ceremonies.
Despite some viewers expressing their outrage at the episode, others thanked the BBC for showing the landmark marriage.
A Songs of Praise spokesman told Mail Online : "As well as the complaints, we received almost 400 letters of congratulations, applauding the fact that Songs of Praise is reflecting modern Christianity."
Committed Christian Mr Wallace told Songs of Praise that he had dreamed of marrying his partner in front of fellow members of the church's congregation.
Stonewall, a charity for lesbian, gay, bisexual and transgender people, added: "LGBT people exist in every community, in every workplace, in every region, from every ethnic background, and in every religion.
"Faith is often used to justify anti-LGBT views and attitudes. This is wrong and perpetuates a myth that faith and LGBT inclusion cannot coexist.
"Faith is an important part of many LGBT people’s lives and it was powerful to see this represented on Songs of Praise.
"While we know there are different opinions in faith communities, we work with lots of LGBT people of faith and faith leaders who are passionate about LGBT equality."
Songs of Praise focused on church service hymns when it first launched in 1961, however it now features religious stories as well as music.
