2 Corinthians 5:20-21

20So we are ambassadors for Christ, as though God were making His appeal through us; we [as Christ’s representatives] plead with you on behalf of Christ to be reconciled to God.

21He made Christ who knew no sin to [judicially] be sin on our behalf, so that in Him we would become the righteousness of God [that is, we would be made acceptable to Him and placed in a right relationship with Him by His gracious lovingkindness].