One of Paul’s purposes in writing 2 Corinthians was to prepare the Corinthians for his visit. While ministering to the Corinthians, Paul planned to receive their gift for the saints in Jerusalem. After several chapters of catching the Corinthians up on his current situation (2 Cor 1:1-2:13), and a lengthy defense of his apostolic ministry (2 Cor 2:14-7:1), Paul returned again to the point of departure at the end of 1 Corinthians. In 1 Corinthians 16, Paul asked the Corinthians to contribute to the needy Jewish Christians in Jerusalem. Corinth was a wealthy city and Paul believed that the Corinthians’ resources could bring relief (Rom 15:22-33). The apostle’s practical concerns for the gospel and the broader unity of the church dominated 2 Corinthians 8-9, chapters which also manifest Paul’s administrative skill and integrity in handling sensitive issues. Paul viewed the Corinthians’ collection for the needy Jewish believers in Judea within the framework of the storyline of Scripture.
(1) In 2 Cor 8:15, Paul quoted Exod 16:18 to urge the Gentiles to provide for the physical needs of the Jewish Christians in Judea. Immediately following the Exodus, the Lord provided manna for the people. In Exod 16:15-20, Moses commanded that the people each take two quarts per individual. Every person in the community of Israel had the same amount of food, no surplus nor deficiency. Paul urged the Corinthians to follow the example of Jesus Christ, who, “although He was rich, for your sake He became poor, so that by His poverty you might become rich” (2 Cor 8:9). Paul proposed that the gospel should have an equalizing effect when it comes to socioeconomics; those enjoying surplus should feel compelled to share with those in need so that there would be equality in the church (2 Cor 8:14). Paul noted Moses’ observation concerning the Lord’s supply of manna “the person who gathered much did not have too much, and the person who gathered little did not have too little” to urge the Gentiles to share their material blessings with Jews. In Paul’s mind, Gentile generosity toward the Jews would be the just response from those who had received historical spiritual blessings from descendants of Abraham.
(2) In 2 Cor 9:8-9, Paul quoted Ps 112:9 to present God’s generosity to His people. In Psalm 112, the psalmist extolled the stability the generous enjoy in their possessions, relationships, and status before God. When the psalmist wrote, “He distributes to the poor; his righteousness endures forever” (Ps 112:9), he had a human in mind. In Paul’s mind, if a man could be that generous, God all the more. “God is able to make every grace overflow to you,” Paul wrote, “so that in every way, always having everything you need, you may excel in every good work. As it is written: ‘He has scattered; He has given to the poor; His righteousness endures forever’” (2 Cor 9:8-9). What the Corinthians had received freely from God they should freely give to their needy Jewish brothers and sisters in Judea. Paul concluded 2 Corinthians 9 by noting that he was speechless, unable to describe the joyful partnership God called His people into when they responded to His generosity and shared His good gifts with each other.

2 Corinthians 10-13
In the final section of 2 Corinthians, Paul defended his frank speech regarding the ethical norms of the church, and his apostolic ministry in general. To a church neck-deep in a culture of boasting, Paul boasted only in his dependence on Christ. The church in Corinth considered Paul—beaten, impoverished, homeless, lacking external flash, dependent upon others—weak. Yet, for an apostle committed to Christ, all of these were like bullet points on a resume. The Corinthians were tempted to think of a crucified Messiah as far too weak to elicit their worship. Paul hoped they would come to their spiritual senses and recognize that God’s weakness in Christ far surpassed any human strength. Paul’s fatherly care for the Corinthians compelled him to examine their spirituality. In the end, he was both confident of them, and cautious toward them. While Paul affirmed their repentance and spoke highly of them (2 Cor 1:11; 2:10; 3:2-3; 4:14-15; 7:4; 9:1-5), he was ready to prosecute any among them who wished to be both of Christ and of the world. In 2 Corinthians 10-13, Paul described his new covenant ministry with respect to the judicial and prophetic precursors in the narrative of redemptive history that preceded him.
(1) In 2 Cor 10:17, Paul quoted Jer 9:24 to emphasize his dependence on God in new covenant ministry. Jeremiah endured a difficult ministry assignment because the Lord called him to confront the people of Judah, and the people were arrogant and boasted in their self-security. Despite the rise of the Babylonians in Judah, the wise boasted in their wisdom, the mighty boasted in their strength, and the wealthy boasted in their riches. Jeremiah told them that the one who boasts should boast in his knowledge of God—the One who shows His righteousness on earth (Jer 9:24). Paul cited Jer 9:24 in 1 Cor 1:31 to instruct the Corinthians that since God has chosen to save the dishonorable, anyone who boasts must boast in the Lord. Paul used Jer 9:24 in 1 Cor 1:31 to call the Corinthians to boast in the Lord and he used it in 2 Cor 10:17 to explain his own ministry. As Paul took the gospel to areas where Christ had not been named, he could not boast in the accomplishments of another person. His boast would only be in the Lord’s grace as He saved those who heard Paul preach. Paul refused to operate in the flesh and boast in human associations that might give him clout. He needed no letters of commendation (2 Cor 3:1-3) since he relied only on the Lord’s working through him.
(2) In 2 Cor 13:1, Paul cited Deut 17:6 to establish the judicial process he would administer to any in the church that had not repented of their selfishness. In Deuteronomy 17, Moses established principles of justice Israel was to follow as they entered the land. If one was accused of idolatry and the accusation was confirmed by two or three witnesses, that person was to be stoned so that the evil would be removed from the community of God’s people (Deut 17:6-7). Paul cited Deut 17:7 in 1 Cor 5:13 where he urged the church to remove the man who was sleeping with his stepmother. In 2 Cor 13:1, Paul quoted Deut 17:6 saying, “This is the third time I am coming to you. ‘On the testimony of two or three witnesses every word will be confirmed.’” Paul was yet concerned that some in the congregation were sinning. In Paul’s evaluation, church discipline might be necessary in order to remove sinners from the congregation so that the church could progress in the grace of Christ. In 2 Cor 12:20, Paul wrote, “I fear that perhaps when I come I will not find you to be what I want, and I may not be found by you to be what you want.” Paul was preparing for a trial, ready to prosecute any who had not repented of their “uncleanness, sexual immorality, and promiscuity” (2 Cor 12:21). Paul’s demeanor as a trial lawyer would be firm, fully identifying with Christ to examine if the Corinthians had met the demands that are consistent with the gospel. Paul exhorted the Corinthians first to test themselves to see if they were in the faith, and then evaluate him based upon the fact that he boasted only in the Lord (2 Cor 13:5-11).
2 Corinthians Commentary New Testament