The Lord will not suffer the soul of the righteous to famish (comp. Proverbs 19:23). The soul is the life (comp. Proverbs 13:25). So the psalmist says (Psalms 37:25), "I have been young, and now am old; yet have I not seen the righteous forsaken, nor his seed begging their bread."
Christ speaks of the providence that watches over the lower creatures, and draws thence a lesson of trust in his care of man. concluding, "Seek ye first the kingdom of God, and his righteousness, and all these things shall be added unto you" (Matthew 6:26, Matthew 6:33).
But he casteth away the substance of the wicked; Septuagint, "He will overthrew the life of the wicked;" Vulgate, "He overturns the plots of sinners." The word rendered "substance" (havvah) is better understood as "desire."
God frustrates the eager longing (for food or other good things) of the wicked; they are never satisfied, and get no real enjoyment out of what they crave (comp. Proverbs 13:25).