690. In addition it should be realized that one community is never utterly and completely like another, nor one member within a community like any other member. Instead unanimous and harmonious variety of all exists, and these variations have been so ordered by the Lord that they strive towards one single end, which is attained through love and faith in Him. From this arises their unity. For the same reason one heaven and form of heavenly joy is never utterly and completely like another. Indeed variations in love and faith are what determine the nature of heaven and its joy.