Wise parents teach their children to apply the healing, reconciling, and strengthening power of the Atonement within their family. Just as sin, mortal weaknesses, emotional hurt, and anger are conditions that separate God’s children from Him, these same conditions can separate family members from each other. Each family member has a responsibility to strive for family unity. Children who learn to strive for unity at home will find it easier to do so outside the home.

     - The Church of Jesus Christ of Latter-day Saints, Handbook 2, 1.3.2 (emphasis added)