Summary: God's grace enables us to have all-sufficiency so we can abound in giving. God's is able to give us complete sufficiency so that we can abound in every good work
2 CORINTHIANS 9: 8 [GAINING PERSPECTIVE Series]
THE GRACE OF ALL-SUFFICIENCY
Grace giving is a wonderful liberation from things and from circumstances. Instead of things possessing you, you start to possess them. Instead of money and things controlling you, dictating to you your actions, you begin to control money. You develop a new liberty and freedom. The words of our text apply to money matters for they are in the midst of a very earnest appeal to the Corinthian Christians for their financial help. Yet the principle of the text goes far beyond money to the very depths of the Christian life
Notice that our text has three clauses. These clauses create a progressive flow of thought that may be defined as a fountain, a reservoir and a stream. "God is able to make all grace abound toward you," or make you a Fountain, "so that you always have all sufficiency in everything" or make you a Reservoir, and "you may have an abundance for every good deed" or make you a stream that is feed by the Reservoir which originates from the Fountain. The fountain pours into the reservoir, the reservoir over flows so as to feed the stream. God's grace enables us to have all-sufficiency so we can abound in giving. God is able to give us complete sufficiency so that we can abound in every good work (CIM).
I. A FOUNTAIN, 8a.
II. A RESERVOIR, 8b.
III. A STREAM, 8c.
One way God’s approval of the Cheerful giver (7b) finds expression is in the provision of both spiritual and material prosperity caused by His fountain of overflow grace. Let’s back up to verses 6 & 7 to get the context for verse 8. “But this (I say) the one who is sowing sparingly, He will also harvest sparingly, and the one who is sowing upon the bases of blessings, He will also, harvest upon the bases of blessings.”  “Just as everyone has purposed by (in his) heart, not (grudgingly) out of sorrow or out of compulsion, for God loves a cheerful giver.”
The uncertainty of life in the ancient world may have caused the Corinthians concern about giving money. God though does not want the uncertainties of life to be a reason to withhold our generosity. God being God is able to provide everything they or we need is the declaration in the first part of verse 8. “And God is able to overflow all grace into you (all) [(so) that in everything at all times you (all) may overflow having sufficiency into every good work.]”
“God is able” is the [frequent] promise of Scripture so that God's people will place their confidence in Him (Rom. 16:25, Eph. 3:20; Jude 24). The Christian should depend upon the fact that God is able. We especially need to be reminded of this when we are called to believe or do something contrary to the natural or worldly thinking. Giving to the natural mind is lessening our store not the way to increase it. To believe giving increases our supply it is necessary to believe in the power, providence and promise of God. God is able to accomplish the paradox that scattering seed increases the supply of [true] seed. When biblical teaching is contrary to our fallen nature's reasoning we need to remember that God is able. [Hodge, Charles. The Geneva Series of Commentaries. I & II Corinthians. 1859, 1974. Banner of Truth. Edinburgh. P. 596.]