THE Epistle to the Ephesians is full of the wealth of God's nature. It is set to that master-chord struck centuries before by a temple minstrel, "Thou, Lord, art good, and ready to forgive; and plenteous in mercy unto all those that call upon Thee." The apostle struggles with the inadequacy of human language in his attempt to convey some conception of what God is willing to expend upon the heirs of salvation.
We are all familiar with God's prodigality in Nature. Every common hedgerow with its wealth of vegetation; every lazy trout-stream; where the fish lie in the cool depths, and the flowers dip down their dainty cups; every square foot of the midnight sky, set thick with rare jewels --attest the unsearchable resources of his power. But these are for all the world to see. And as the man of wealth opens richer stores to those that share his love than he displays to the casual visitor, so God has prepared for those that love Him, things which eye hath not seen, nor ear heard, nor the heart of man conceived. There are riches of grace in the heart of God, of forgiveness, and pitifulness, and mercy, of which the foremost of the saints in the heavenly ranks, and the chief of sinners on earth--however heavily they have drawn on them--know comparatively nothing. We have no standard for computing infinity; and infinity is the orbit in which God lives and loves.
This is what the apostle means when he speaks of the riches of God's grace.