Judaism 101 provides a summary page on marriage. The page describes Jewish beliefs on topics including soul mates, a typical wedding and the marital relationship.

JewishEncyclopedia.com provides a summary page on marriage.

The United States Conference of Catholic Bishops provides a summary page on marriage and family. The page includes links to official documents from the Vatican and bishops, blessings and prayers for Catholic households and prayer cards for married couples.

Read the United Methodist Church’s statement on marriage and family. The site also provides links to the denomination’s statements on family, divorce and adoption, among other topics.

Read the Southern Baptist Convention’s position statement on marriage and sexuality. The site also includes marriage in a summary of the denomination’s basic beliefs.

Focus on the Family provides a summary page on marriage.

The Pew Forum on Religion and Public Life provides provides a resources page listing religious groups’ official positions on same-sex marriage.

Rabbi Elliot Dorff is a professor of philosophy and university rector at American Jewish University in Bel-Air, Calif. He is an expert in Jewish family issues, including adoption. He has studied the Jewish perspective on assisted death, transhumanism and ethics in general.

Joel Zimbelman, a California State University-Chico, religious studies professor, has written on legal decisions and public opinion informing the debate over the removal of life-sustaining treatment, assisted suicide and euthanasia.