We are ambassadors therefore on behalf of Christ, as though God were entreating by us: we beseech you on behalf of Christ, be ye reconciled to God.

So we are the representatives of Christ, as if God was making a request to you through us: we make our request to you, in the name of Christ, be at peace with God.

Υπερ του Χριστου λοιπον ειμεθα πρεσβεις, ως εαν σας παρεκαλει ο Θεος δι' ημων· δεομεθα λοιπον υπερ του Χριστου, διαλλαγητε προς τον Θεον·

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.