What does Romans chapter 12 verse 5-7 mean?

Paul uses the human body as a picture of the church. There must be unity and integration; but each member of the body has a different purpose and function. The unity of the church is centered in Christ. God freely gives gifts to the individual members for the purpose of meeting the needs of the overall church body. These gifts, given for the ministry, include prophecy, servicing, teaching, encouraging, contributing to the needs of others, leadership, and showing mercy. Church members must use these gifts if the church is to function as God intends.