Christian conservative group American Family Association (AFA) is calling on two Supreme Court justices to recuse themselves from an upcoming case challenging gay marriage bans.

On Friday, the high court agreed to hear cases challenging bans in four states. The court consolidated the cases and scheduled oral arguments for sometime in April.

(Related: Supreme Court agrees to hear four cases challenging gay marriage bans.)

AFA spokesman Bryan Fischer said in October that Justices Ruth Bader Ginsburg and Elena 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.”

AFA President Tim Wildmon echoed those sentiments last week: “Both Kagan and Ginsburg have not only been partial to same-sex marriage but they have also proven themselves to be activists in favor of it.”

The justices have married several same-sex couples in states where it is legal.

However, the AFA is not asking for conservative justices to step down. Justice Antonin Scalia, for example, 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.