The least crumb of bread.

Herman Witsius has written:

“Now this possession of the world consists in these following things: 1st. That every son of God does possess so much of the good things of this world, as the wisdom of his heavenly Father has ordained, to be so sufficient for the support of his animal life, that his spiritual may suffer no detriment, and that he truly possess it in such a manner, as in the use and enjoyment thereof, he may taste the love of his Father, bestowing that upon him, as an earnest of a far better good, and of his elder brother who became poor, that his people might be rich, 2 Cor. viii. 9. This love of God the Father, and of Christ, when added to the least crumb of bread, or drop of cold water, makes these preferable, in the highest degree, to all the most exquisite dainties of the rich of this world: “a little that a righteous man hath, is better than the riches of many wicked,” Psal. xxxvii. 16.”

(Witsius, Herman. The Economy of the Covenants Between God and Man, Volume I, Kingsburg, CA: den Dulk Christian Foundation, 1990, p. 453)