2 CoriIn 2 Cor 6, Paul beseeched the Corinthians to work together with the Lord and with him and the others with whom he served the Lord in the ministry.  In 2 Cor 5:17-21, he explained that God has given all new creatures in Christ the ministry of reconciliation.  That is, others learn of the gospel through the witness and testimony of those of us who are saved.  

To be workers together with Christ, we:

Must not receive the grace of God in vain – 2 Cor 6:1-2 – Paul was able to labor in the ministry the way he did because of the grace of God that was given to him [1 Cor 15:10].  He assured the Corinthians that they had been given the grace of God to help them, as well, based on the promise that the Lord made to Jesus in Is 49:8.  The Lord will succor Jesus in his millennial reign and, since we are laborers together with him, he also succors us now [in this accepted time and in this day of salvation].  You receive the grace of God in vain when you get saved and refuse to minister the word of reconciliation to others.

Must give no offense in anything – 2 Cor 6:3 – Paul wouldn’t do anything that would cause others to reject Jesus Christ or blame the ministry [1 Cor 9:19-27; Rom 14:15-21].  Likewise, he exhorted the Corinthians to live by the same rule.

Must approve ourselves as ministers of God – 2 Cor 6:4-10 – to minister the word of reconciliation to others takes a lot of grace.  The grace of God strengthened Paul and got him through everything.

A worker together with Christ:

Must love others who work together with Christ – 2 Cor 6:11-13 – Paul told the Corinthians that “our heart is enlarged.”  That is, their hearts were “dilated with affection;” they loved the Corinthians.  And they wanted the Corinthians to love them.  He wrote, “be ye also enlarged.”

Must not be unequally yoked together with unbelievers – 2 Cor 6:14-18 – In writing to the church, Paul said, “ye are the temple of the living God.”  God said, “I will dwell in them, and walk in them; and I will be their God, and they shall be my people.”  As a result, the church, can’t be yoked with the Lord and yoked with unbelievers.  Workers together with Christ don’t minister the word of reconciliation by working together with unbelievers.  Notice:

When men yoke up with unbelievers to do the work of God, God leaves them alone and will not work with them.  So, the admonition is for us to separate from them; they are unclean.  And the promise of God is that he will be a Father unto us and we will be his sons and daughters.  We are already his children by the new birth.  However, the picture here is from Ex 4:22 where Israel was called out of Egypt to be with the Lord.  Likewise, we separate from the world and enjoy our family relationship with each other and with the Lord.  We can get others to join us when they get saved but we can’t be yoked together with them.