“For I the LORD do not change; therefore you, O children of Jacob, are not consumed. From the days of your fathers you have turned aside from my statutes and have not kept them. Return to me, and I will return to you, says the LORD of hosts. But you say, ‘How shall we return?’ Will man rob God? Yet you are robbing me. But you say, ‘How have we robbed you?’ In your tithes and contributions. You are cursed with a curse, for you are robbing me, the whole nation of you. Bring the full tithe into the storehouse, that there may be food in my house. And thereby put me to the test, says the LORD of hosts, if I will not open the windows of heaven for you and pour down for you a blessing until there is no more need. I will rebuke the devourer for you, so that it will not destroy the fruits of your soil, and your vine in the field shall not fail to bear, says the LORD of hosts. Then all nations will call you blessed, for you will be a land of delight, says the LORD of hosts.
(Malachi 3:6-12 ESV)
I say this not as a command, but to prove by the earnestness of others that your love also is genuine. For you know the grace of our Lord Jesus Christ, that though he was rich, yet for your sake he became poor, so that you by his poverty might become rich. And in this matter I give my judgment: this benefits you, who a year ago started not only to do this work but also to desire to do it. So now finish doing it as well, so that your readiness in desiring it may be matched by your completing it out of what you have. For if the readiness is there, it is acceptable according to what a person has, not according to what he does not have. For I do not mean that others should be eased and you burdened, but that as a matter of fairness your abundance at the present time should supply their need, so that their abundance may supply your need, that there may be fairness. As it is written, “Whoever gathered much had nothing left over, and whoever gathered little had no lack.”
(2 Corinthians 8:8-15 ESV)
The point is this: whoever sows sparingly will also reap sparingly, and whoever sows bountifully will also reap bountifully. Each one must give as he has decided in his heart, not reluctantly or under compulsion, for God loves a cheerful giver. And God is able to make all grace abound to you, so that having all sufficiency in all things at all times, you may abound in every good work. As it is written,
“He has distributed freely, he has given to the poor;
his righteousness endures forever.”
He who supplies seed to the sower and bread for food will supply and multiply your seed for sowing and increase the harvest of your righteousness. You will be enriched in every way to be generous in every way, which through us will produce thanksgiving to God. For the ministry of this service is not only supplying the needs of the saints but is also overflowing in many thanksgivings to God. By their approval of this service, they will glorify God because of your submission that comes from your confession of the gospel of Christ, and the generosity of your contribution for them and for all others, while they long for you and pray for you, because of the surpassing grace of God upon you. Thanks be to God for his inexpressible gift!
(2 Corinthians 9:6-15 ESV)