Members of the Church believe that marriages performed in temples are “sealed,” or blessed to last for eternity. The concept that the family unit can continue beyond the grave as a conscious, loving entity, with the marriage partnership and parent-child relationships intact, is a core belief of members of The Church of Jesus Christ of Latter-day Saints.
Once a couple is married and sealed in a temple, any children who are then born to them are automatically sealed to them at birth. If children are born before the couple is sealed, those children can later participate in a temple sealing with their parents. Children that are adopted also have an opportunity to be sealed to the adoptive parents.
The concept of eternal families comes from scripture and modern-day revelation. For instance, the New Testament reference in Matthew 16:19 records Jesus Christ telling the Apostle Peter: “And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.” The Church equates the word “bind” with “seal.”
According to research cited in a 2000 article in the Los Angeles Times, “in an era of divorce, Mormon temple weddings are built to last,” with only a 6 percent divorce rate. Another study, published in 1993 in Demography Magazine, concluded that members of The Church of Jesus Christ of Latter-day Saints who marry in one of the Church's temples are the least likely of all Americans to divorce.