Rush Limbaugh knows a lot about faith and marriage. He talks about religion a lot and had been married four times.

The results are in: According to a recent Pew Research Center study, religion is declining in the United States with the number of Americans who don't affiliate with any particular faith estimated at 56 million. According to conservative radio host Rush Limbaugh, the blame for the fall of the faithful can be placed on "homosexual marriage."

"Some might say, the churches that haven't fallen prey to the dark side. All of this silly social evolution," Limbaugh said on his radio program Tuesday.

"The Methodists, the Presbyterians, the Lutherans - dropped a lot of members," Limbaugh said, noting that those faiths have sanctioned both same-sex marriages and gay clergy.

Of those who don't identify with any particular faith, Limbaugh opined that "they have left their churches because of social issues and the evolution of their churches to social areas they didn't want to go and don't feel comfortable being in."

While he was critical of mainstream Christian faiths, he praised fundamentalist sects with less liberal views on homosexuality.

"If you look at the evangelical churches, they haven't lost anything. Their membership is holding pretty steady," he said. "Where the message has remained, where the mission has remained the same, where the members of the church don't think any corruption is taking place. They're still hanging in there."

According to AP, between 2007 and 2014, when Pew conducted two major surveys of U.S. religious life, Americans who described themselves as atheist, agnostic or of no particular faith grew from 16 percent to nearly 23 percent. At the same time, Christians dropped from about 78 percent to just under 71 percent of the population. Protestants now comprise 46.5 percent of what was once a predominantly Protestant country.

Earlier this month, the controversial radio host told a caller "for millennia marriage has been an institution about specific things.  It has not been an arrangement of convenience in the here and now to satisfy surface, specious desires.  Marriage has been a commitment."

He is currently wed to his fourth spouse Kathryn Rogers.

From our media partner EDGE