1 Corinthians 12:12-26 (NRSV)
12 For just as the body is one and has many members, and all the members of the body, though many, are one body, so it is with Christ. 13 For in the one Spirit we were all baptized into one body—Jews or Greeks, slaves or free—and we were all made to drink of one Spirit.14 Indeed, the body does not consist of one member but of many. 15 If the foot would say, “Because I am not a hand, I do not belong to the body,” that would not make it any less a part of the body. 16 And if the ear would say, “Because I am not an eye, I do not belong to the body,” that would not make it any less a part of the body. 17 If the whole body were an eye, where would the hearing be? If the whole body were hearing, where would the sense of smell be? 18 But as it is, God arranged the members in the body, each one of them, as he chose. 19 If all were a single member, where would the body be? 20 As it is, there are many members, yet one body. 21 The eye cannot say to the hand, “I have no need of you,” nor again the head to the feet, “I have no need of you.” 22 On the contrary, the members of the body that seem to be weaker are indispensable, 23 and those members of the body that we think less honorable we clothe with greater honor, and our less respectable members are treated with greater respect; 24 whereas our more respectable members do not need this. But God has so arranged the body, giving the greater honor to the inferior member, 25 that there may be no dissension within the body, but the members may have the same care for one another. 26 If one member suffers, all suffer together with it; if one member is honored, all rejoice together with it.
Matthew 18:15-20 (NRSV)
15 “If another member of the church[a] sins against you,[b] go and point out the fault when the two of you are alone. If the member listens to you, you have regained that one.[c] 16 But if you are not listened to, take one or two others along with you, so that every word may be confirmed by the evidence of two or three witnesses. 17 If the member refuses to listen to them, tell it to the church; and if the offender refuses to listen even to the church, let such a one be to you as a Gentile and a tax collector. 18 Truly I tell you, whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven. 19 Again, truly I tell you, if two of you agree on earth about anything you ask, it will be done for you by my Father in heaven. 20 For where two or three are gathered in my name, I am there among them.”