Catholic bishops and Mormon leaders have joined to ask the Supreme Court to uphold state bans on gay marriage.

The religious organizations filed an amicus brief in support of defendants in a case challenging Utah's ban. Utah officials turned to the Supreme Court after a federal appeals court struck down its ban as unconstitutional. The groups asked the high court to hear Utah's marriage case.

Also joining the Church of Jesus Christ of Latter-day Saints and The United States Conference of Catholic Bishops (USCCB) in the filing were the Ethics & Religious Commission of the Southern Baptist Convention and the Lutheran Church – Missouri Synod.

The groups argued that the high court should uphold the bans on the basis of tradition and religious freedom.

“Legal uncertainty is especially burdensome for religious organizations and religious believers increasingly confronted with thorny questions,” the document states. “Is their right to refrain from participating in, recognizing or facilitating marriages between persons of the same sex, contrary to their religious convictions, adequately shielded by the First Amendment and other legal protections? Or is further legislation needed to guard religious liberties in these and other sensitive areas?”

But Utah isn't alone in asking the Supreme Court to consider its case. The same appeals court which struck down Utah's restrictive marriage ban also invalidated a similar ban in Oklahoma. A separate court ruled unconstitutional Virginia's prohibition. All three of those cases have been appealed to the Supreme Court. Defendants in cases decided last week striking down bans in Wisconsin and Indiana are expected to follow suit.

On Monday, challenges from Hawaii, Nevada and Idaho will be heard by 3 judges from the Ninth Circuit Court of Appeals in San Francisco.

(Related: Ninth Circuit announces judge panel to hear gay marriage cases from Nevada, Idaho, Hawaii.)