The Christian conservative group American Family Association (AFA) on Sunday released a prayer for the Supreme Court to rule against gay marriage in two cases.

The high court is expected to rule on the cases this week, possibly as early as Monday.

One case challenges the constitutionality of Proposition 8, California's gay marriage ban, while the other claims the Defense of Marriage Act (DOMA), which prohibits federal agencies from recognizing the legal marriages of gay and lesbian couples, is unconstitutional.

(Related: SCOTUS rulings on Prop 8, DOMA likely this week.)

“We pray for the pending Supreme Court decision on same sex marriage,” AFA President Tim Wildmon wrote. “We pray that next week the Court would not impose a false definition of marriage on our nation. Father, we confess that we in the Church have already sinned against You and have not been good stewards of the gift of marriage through our own issues with unfaithfulness, selfishness, pornography, homosexuality and divorce. Forgive us, Lord. Now our nation is following our imperfect example and seeks to redefine and corrupt the gift of marriage in order to satisfy its own lusts. We acknowledge that through Jesus Christ we can repent and turn to You. So help the people of this nation to turn to You with repentant hearts, that we all may be covered in Your grace. Lord, have mercy on us. Lord, let Your purity and truth shine in this situation. Help us to proclaim to those enslaved by homosexuality, and any other sin, that liberty and identity is available in Jesus Christ. Help us to lovingly embrace the repentant.”