A coalition of African-American pastors on Monday strongly criticized President Barack Obama's endorsement of gay marriage.

In May, Obama told ABC News' Robin Roberts that “I think same sex couples should be able to get married.” The NAACP, the nation's oldest civil rights organization, cited the president's move in making its own endorsement.

At a news conference held at Opryland Resort in Nashville, the pastors voiced their disapproval.

“His support for this un-biblical behavior will destroy even more folks in our already decaying and broken society,” said Quinn Chapel AME's Luke Robinson. “His pronouncement is in fact a direct attack on the God of the bible and the Christian faith.”

“We were once proud of you, but our pride has turned to shame that you, the man holding the most powerful position in the world, would stoop to leading the country down an immoral path,” said Bill Owens of the Coalition of African-American Pastors.

At the presser, the group called on black pastors from across the country to withhold their support from President Obama's reelection campaign.