And all things are of God, who hath reconciled us to himself by Jesus Christ, and hath given to us the ministry of reconciliation; To wit, that God was in Christ, reconciling the world unto himself, not imputing their trespasses unto them; and hath committed unto us the word of reconciliation. 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.–2 Cor. 5:18-21
God has given and committed to His church the ministry and message of reconciliation in Christ Jesus (II Cor. 5:18). God has reconciled His chosen people unto Himself, through the great and glorious sacrifice of Christ's precious blood (II Cor. 5:21). It is true that our sins have totally separated us from God (Isa. 59:2-8), but it is also just as true that when Christ Jesus died to put away our sin He did not fail to bring in total and everlasting reconciliation.
Our message is not to propose terms of peace, nor to beg sinners to make peace, but rather to proclaim that peace has been made between God and His people. "Having made peace through the blood of His cross, by Him to reconcile all things unto Himself" (Col. 1:20). Now that God has removed the reason for our separation (sin), we can freely proclaim to those who know themselves to be sinners, "Be ye reconciled to God" (II Cor. 5:20). That is, submit yourselves to God's rule, power, will, and sacrifice. Believe the Lord Jesus Christ as your only Saviour, hope, redemption, righteousness, and reconciliation (Rom.10:1-4).