And if one member suffers anything, all members suffer with it, or of one member glories, all the members rejoice with it. Rather are we to practice the truth in love, and to grow up in all things in Him who is the head, Christ. Christ is the head of the body, the family. Now you are the body of Christ, member for member. Be you yourselves as living stones, built thereon into a spiritual house, a holy priesthood, to offer spiritual sacrifices acceptable to GOD through Jesus Christ.
Family members have different skills.
And He Himself gave some men as Apostles, and some as prophets, others again as evangelists, and others as pastors and teachers, in order to perfect the saints for a work of ministry, for building up the body of Christ. The section regarding covenants is from a talk by Dr. Scott Hahn.