Former Republican House majority leader Tom DeLay predicted last week that a Supreme Court ruling striking down state bans on gay marriage would lead to massive revolt.

The high court will hand down a ruling this month in a case challenging bans in Ohio, Kentucky, Tennessee and Michigan. The decision could lead to nationwide marriage equality.

Appearing on Newsmax, DeLay told host Steve Malzberg that “all hell is going to break loose” if the justices strike down the nation's remaining 13 bans.

“A ruling by the Supreme Court is nothing but an opinion if the legislative branch and the executive branch do not enforce it,” DeLay said. “And not only that, if the states would just invoke the 10th Amendment and assert their sovereignty, they could defy a ruling by the Supreme Court.”

“If this Supreme Court rules against marriage, all hell is going to break loose.”

“We're going to stand for marriage, even if it takes civil disobedience,” he added, a reference to a pledge he and other conservatives, including presidential hopefuls Mike Huckabee and Rick Santorum, signed vowing to defy such a ruling.