“we are ambassadors for Christ” To whom does the “we” and “you” in this verse refer? Is Paul speaking to the church? If so, the “we” is Paul and his missionary team and the “you,” believers at Corinth. These people did not need to be saved, but they did need to be brought back into unity.
Notice that Paul does not say believers should be ambassadors, but that they are ambassadors. This is similar to Jesus’ statements in Matt. 5:13–16. Believers are salt and light. The question is what kind of salt and light they will be. This is the question here. Believers are Christ’s representatives, but what kind of ambassadors are they: factious, heretical, unloving, etc.?