Ambassador

am·bas·sa·dor (amˈbasədər)
Noun
1: an official envoy; especially : a diplomatic agent of the highest rank accredited to a foreign government or sovereign as the resident representative of his or her own government or sovereign or appointed for a special and often temporary diplomatic assignment.

2: A person who acts as a representative or promoter of a specified activity.

-Lord forgive us for representing you so poorly.
-Lord forgive us for pursuing our own agendas instead of yours.
-Lord forgive us for getting taken in by the love of money.
-Lord give us your eyes, ears, and hearts for a sick and dying world.

"Therefore, we are ambassadors for Christ, as though God were making an appeal through us..." 2 Corinthians 5:20