2 Corinthians 9:6 But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully.
Religion and even ministers of grace use this scripture so much to have people give money, which we should support ministry just not out of the motivations they try to convey. Religion will say that this is part of tithing and that you give your tithes so God can bless you. Well that is the law and we no longer are bound to that law but live in the blessing of Jesus. You know if you teach the people they are blessed just because they are believers in Jesus they will start walking in the blessing, but if you teach them to give under the law you will bind them by the law.
Now grace ministers will say that you are blessed but you need to sow seed to reap a harvest and that this is just a basic bible principle. It is a true principal in context; Jesus did often talk about sowing the Word of God, but never once money. In fact the only references he did give about sowing and reaping for provision were how the animals neither sow nor reap yet our Father provides for them and are we not worth more than them. Again I want to keep this in context of this whole passage because we are to give to help out those in need and to aid in spreading the message of the gospel. We are blessed so that the world can see the love of our Father, which one way is through his provision and not by our efforts and Jesus even said to give expecting nothing in return. I will say in this one case more than likely he meant nothing in return from the person you gave to, but if we are going by principals then that clearly is one as well. But what did Paul mean by this sowing and reaping?
The first question to ask is what they are sowing for and hoping to reap. These people who were giving were not hoping that God was going to be giving them more personally. In fact they for the most part were wealthier than most people of other cities. I think Paul helped shed a little light though on how they were to handle being prosperous already or at least make an attempt to understand in their hearts how to handle being blessed. 2Co 9:10 Paul alludes to the fact that God gives seed to the sower and bread to eat, so his provision has multiple purposes. God gives abundantly so we have all we need but also then so we can help others out.
To get back to the question though what was the reason they were sowing financially into the ministry? Was it for Paul to evangelize or what? Paul said earlier that none of it was for him and they even had people tagging along to give a good report that the money was properly used for its intentions which was to give relief to the poor in Jerusalem. 2Co 9:13-14 Paul said the fruit of this giving is not that those who give will get more, but that those who are in need will have their needs met and glorify God. So the greatest harvest is the glorification of God and this makes perfect sense in context, because the more that they gave, or was sown, the greater the joy and the glory given to God.
The Gods Word translation really sums this up a little clearer:
2 Corinthians 9:11-15 God will make you rich enough so that you can always be generous. Your generosity will produce thanksgiving to God because of us. 12 What you do to serve others not only provides for the needs of God’s people, but also produces more and more prayers of thanksgiving to God. 13 You will honor God through this genuine act of service because of your commitment to spread the Good News of Christ and because of your generosity in sharing with them and everyone else. 14 With deep affection they will pray for you because of the extreme kindness that God has shown you. 15 I thank God for his gift that words cannot describe.
Now if the way many want to use this concept of sowing and reaping for provisional gain were actually true then would Paul not have been better off to try to receive from the poor in Jerusalem whatever they would give and take it to those who did not need it in Corinth in hopes that the poor would be blessed and become like the rich? Seems perfectly logical based on the misuse of this scripture. Hope this sheds some light and remember you are blessed.