Liberty Counsel founder Mat Staver has warned that in overturning gay marriage bans courts risk losing legitimacy.

Staver and his wife, Anita, wrote Florida's ban. Last week, six gay couples filed a legal challenge to the state's 2008 voter-approved constitutional amendment.

(Related: Six gay couples challenge Florida's gay marriage ban.)

Staver told Christian conservative website OneNewsNow that prior to the Supreme Court's overturning of the Defense of Marriage Act (DOMA), which led to federal recognition of the marriages of gay and lesbian couples, “these amendments would be easy to defend.”

“Now it's certainly going to be a battle all over the country as one after another are being challenged,” Staver said.

Starver added that the constitutionality of such amendments is “obvious.”

“Frankly I think that if we go down this road and courts begin invalidating these marriage amendments, it really begs the question as to whether the courts have lost their legitimacy, because, obviously, there's no question from a constitutional standpoint that marriage as a union of one man and one woman being affirmed in law or state constitution is clearly constitutional,” he said.