Christian conservative Scott Lively is calling on two Supreme Court justices to recuse themselves from an upcoming case challenging gay marriage bans.

The high court has agreed to hear cases challenging bans in four states. The court consolidated the cases and scheduled oral arguments for sometime in April, with a decision expected in June.

“Our one chance to prevent the death of marriage is to convince SCOTUS that their ruling will become the Roe v Wade of sodomy,” Lively wrote in a blog post. “That means we need to start fighting now.”

“The first line of attack is to demand the recusal of both Ginsberg [sic] and Kagan, who have performed 'gay wedding' ceremonies, thus invalidating their claim to impartiality, which is a prerequisite to sitting as jurists on any matter. We need a continual presence in front of the U.S. Supreme Court and federal courts in every state demanding that Ginsberg and Kagan recuse themselves. A demand for recusal must be on the lips of every pro-family activist in America and a constant refrain on talk shows, social media and letters to the editor.”

“And if they fail to recuse themselves and by their votes establish a majority opinion 'legalizing' homosexual marriage we must declare the ruling invalid and refuse to recognize it,” Lively added.

Lively has long history opposing gay rights – and calling for the criminalization of gay sex – so its not surprising he has joined other conservatives in demanding the recusal of Ginsburg and Kagan.

The American Family Association (AFA) started beating that drum in October.

AFA spokesman Bryan Fischer said that Ginsburg and Kagan “have an obligation to step off the bench for those cases on the grounds that their impartiality has been severely compromised” as a result of performing “sodomy-based 'wedding' ceremonies.”

Neither the AFA nor Lively is asking for conservative justices to step down. Justice Antonin Scalia has made his opposition clear. In 2013, Scalia told a group of lawyers that there is no right to “homosexual conduct” in the United States Constitution. Also, if marrying couples is the yardstick by which we measure impartiality, then we should note that Justice Clarence Thomas officiated at the wedding of conservative commentator Rush Limbaugh and Marta Maranda Fitzgerald. The marriage lasted a decade. In 2010, Limbaugh married his fourth wife, Kathryn Rogers.