What does it mean that all members have not the same office?
It means that within the Body of Christ, believers do not all have the same function or role. Just as fingers and toes, eyes and ears, each member has an intrinsic purpose, yet all are one body in Christ and members one of another.
Les explains that “all members have not the same office” simply means the fingers do not do the same thing as the toes, and the eyes do not do the same thing as the ears. Every member of the body has an intrinsic purpose. Then verse 5 applies this to believers of the Gospel of Grace: being many, they are one body in Christ, and every one members one of another. Les illustrates this with missionaries who had believers in the jungles of Bolivia, yet those believers are in the same body as believers in Oklahoma and the rest of America. Regardless of location or station in life, all are members of that same organism, the spiritual makeup of believers.
For as we have many members in one body, and all members have not the same office: