Nearing the close of their 126th Supreme Convention in Quebec City on Thursday, the Knights of Columbus approved resolutions calling for the legal protection of marriage and asking Catholics holding elected office to “be true” to their faith by acting “bravely and publicly in defense of life.”

In one resolution at the fraternal charitable organization’s annual convention, the Knights called for “legal and constitutional protection ... for the definition of marriage as the union of one man and one woman to the exclusion of all others.” The resolution declares that marriage is a “natural institution based on ancient human values” that over time has become a “unique and deeply rooted social, legal and religious institution.”

Marriage, the resolution said, provides the best environment in which to protect children and also “reflects the natural biological complementarity between man and woman which predates the state and which is woven into the social and religious fabric of every major culture and society.”

Another resolution passed by the Knights advocates building a “culture of life” and opposing “any governmental action or policy that promotes abortion, embryonic stem cell research, human cloning, euthanasia, assisted suicide and other offenses against life.”

Knights of Columbus delegates also exhorted “our fellow Catholics who are elected officials to be true to the faith they claim to profess by acting bravely and publicly in defense of life.” Such officials, the resolution advised, should affirm with Pope Benedict XVI that “there can be no room for purely private religion.”

The resolution reaffirmed the organization’s policy of not inviting to any Knights of Columbus event persons “who do not support the legal protection of unborn children.”

In his opening convention address delivered earlier this week, Supreme Knight Carl A. Anderson urged Catholic voters to “stop accommodating pro-abortion politicians” and to “say ‘no’” to every political candidate who supports abortion.

Other resolutions passed at the convention addressed religious freedom, the Universal Declaration on Human Rights, decency on the internet and in the media, Catholic education, and the U.S. Pledge of Allegiance.

The Knights of Columbus, the world’s largest organization of Catholic laymen, was founded in 1882 and has more than 1.75 million members around the world.