And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work. 2 Corinthians 9:8
The apostle Paul had been addressing the issue of giving with the Corinthian church. He urged them to have ready their offering to support the church in Jerusalem, each giving as they have purposed in their heart to give. They were to give with joy, and freely, not complaining or grumbling:
Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver. 2 Corinthians 9:7
Using the analogy of a farmer, he let them know that in proportion to their giving so they could expect to receive:
But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully. 2 Corinthians 9:6
He then let them (and us) know that giving freely and as abundantly as you can would be honored by God by his supplying all that is needed in every situation. He who supplied the seed for the sower is he who also supplies bread for eating and multiplies seed sown:
Now he that ministereth seed to the sower both minister bread for your food, and multiply your seed sown, and increase the fruits of your righteousness; 2 Corinthians 9:10
Give your best, give even your last; God will abundantly provide for you!