The answer is really quite simple, if one is willing to accept the biblical response . . .
“Now then we are ambassadors for Christ, as though God did beseech you by us: we pray you in Christ’s stead, be ye reconciled to God. For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him” (II Corinthians 5:20-21).
Notice that ambassador is in the plural case, meaning that all that are washed by the blood of Christ - if they are willing - are representatives of our Lord Jesus Christ.
Biblical response? God is written in my heart. Now, I will insult you. Cast no heed, of the words of the deeds of men. Record your soul, by the breath of God.