1 Corinthians 15:58
Therefore my belove brethren, be steadfast, immovable, always abounding
in the work of the Lord, knowing that your labor is not in vain in the Lord. (NKJV)
2 Corinthians 5:20
We are therefore Christ's ambassadors, as though God were making His Appeal through us. We implore you on Christ's behalf: Be reconciled to God. God made him who had no sin to be sin for us, so that in him we might become the righteous of God. (NIV)